7Baggers

Hecla Mining Company
(NYSE:HL) 

HL stock logo

Hecla Mining Company, together with its subsidiaries, discovers, acquires, develops, and produces precious and base metal properties in the United States and internationally. The company offers lead, zinc, and bulk concentrates, as well as carbon materials to custom smelters, metal traders, and thir...

Founded: 1891
Full Time Employees: 1,622
Sector: Basic Materials
Industry: Gold

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-06-30 
                                                                                        
      sales
    411,433,000 448,111,000 409,542,000 304,027,000 261,339,000 249,655,000 245,085,000 245,657,000 189,528,000 160,690,000 181,906,000 178,131,000 199,500,000 194,825,000 146,339,000 191,242,000                                                                     
      cost of sales and other direct production costs
    124,410,000 164,054,000 180,451,000 147,344,000 148,950,000 141,465,000 144,855,000 140,464,000 121,461,000 112,988,000 112,212,000 107,754,000 125,550,000 132,232,000 104,900,000 115,907,000 105,772,000 98,962,000 112,542,000 110,320,000 96,709,000 104,323,000 105,977,000 92,853,000 85,887,000 139,147,000 95,878,000 104,938,000 110,386,000 107,076,000 93,609,000 80,440,000 72,869,000 80,190,000 68,358,000 77,503,000 78,676,000 87,648,000 94,061,000 82,953,000 74,320,000 72,762,000 79,273,000 67,567,000 73,965,000 68,986,000 86,680,000 71,039,000 77,741,000 71,546,000 66,937,000 60,008,000 36,825,000 34,682,000 32,961,000 33,172,000 33,290,000 40,540,000 41,639,000 38,865,000 44,529,000 45,811,000 46,357,000 35,545,000 36,270,000 36,403,000 41,079,000 43,228,000 52,243,000 18,157,000 30,493,000 22,288,000 34,138,000 28,886,000           
      depreciation, depletion and amortization
    33,768,000 35,849,000 48,624,000 37,159,000 38,385,000 39,856,000 40,944,000 53,763,000 48,907,000 40,837,000 36,217,000 32,718,000 39,002,000 37,576,000 32,992,000 38,072,000 35,298,000 32,875,000 45,790,000 48,403,000 49,331,000 37,803,000 40,238,000 39,423,000 39,666,000 60,480,000 50,774,000 49,477,000 38,787,000 30,709,000 43,464,000 31,817,000 28,054,000 32,697,000 28,844,000 25,569,000 28,952,000 33,049,000 26,647,000 29,897,000 25,875,000 30,840,000 28,229,000 27,166,000 25,254,000 30,792,000 26,804,000 27,735,000 25,803,000 27,903,000 19,006,000 20,211,000 14,007,000 12,381,000 11,601,000 9,879,000 9,661,000 12,501,000 11,099,000 11,204,000 12,262,000 13,956,000 14,966,000 15,020,000 16,069,000 15,706,000 15,986,000 9,900,000 10,127,000 6,022,000 5,592,000 5,947,000 7,504,000 7,837,000           
      total cost of sales
    158,178,000 199,903,000 229,075,000 184,503,000 187,335,000 181,321,000 185,799,000 194,227,000 170,368,000 153,825,000 148,429,000 140,472,000 164,552,000 169,808,000 137,892,000 153,979,000 141,070,000 131,837,000 158,332,000 158,723,000 146,040,000 142,126,000 146,215,000 132,276,000 125,553,000 199,627,000 146,652,000 154,415,000 149,173,000 137,785,000 137,073,000 112,257,000 100,923,000 112,887,000 97,202,000 103,072,000 107,628,000                         59,767,000 61,323,000 50,565,000                     
      gross profit
    253,255,000 248,208,000 180,467,000 119,524,000 74,004,000 68,334,000 59,286,000 51,430,000 19,160,000 6,865,000 33,477,000 37,659,000 34,948,000 25,017,000 8,447,000 37,263,000 45,429,000 53,241,000 35,228,000 59,260,000 64,812,000 46,764,000 53,488,000 34,079,000 11,372,000 25,318,000 14,880,000 -20,243,000 3,444,000 -1,265,000 6,576,000 35,002,000 38,786,000 47,226,000 43,637,000 31,207,000 34,916,000 43,548,000 58,685,000 58,452,000 30,822,000 11,735,000 -2,561,000 9,464,000 19,873,000 22,207,000 22,023,000 18,728,000 22,243,000 14,731,000 20,686,000 5,111,000 25,618,000 34,037,000 37,309,000 23,968,000 48,202,000 49,826,000 67,805,000 67,791,000 79,573,000 74,693,000 54,524,000 38,066,000 27,536,000 35,927,000 38,116,000 11,397,000 1,625,000 21,781,000 24,064,000 20,993,000 18,458,000 16,422,000           
      yoy
    242.22% 263.23% 204.40% 132.40% 286.24% 895.40% 77.09% 36.57% -45.18% -72.56% 296.32% 1.06% -23.07% -53.01% -76.02% -37.12% -29.91% 13.85% -34.14% 73.89% 469.93% 84.71% 259.46% -268.35% 230.20% -2101.42% 126.28% -157.83% -91.12% -102.68% -84.93% 12.16% 11.08% 8.45% -25.64% -46.61% 13.28% 271.10% -2391.49% 517.62% 55.09% -47.16% -111.63% -49.47% -10.66% 50.75% 6.46% 266.43% -13.17% -56.72% -44.55% -78.68% -46.85% -31.69% -44.98% -64.64% -39.42% -33.29% 24.36% 78.09% 188.98% 107.90% 43.05% 234.00% 1594.52% 64.95% 58.39% -45.71% -91.20% 32.63%               
      qoq
    2.03% 37.54% 50.99% 61.51% 8.30% 15.26% 15.28% 168.42% 179.10% -79.49% -11.10% 7.76% 39.70% 196.16% -77.33% -17.98% -14.67% 51.13% -40.55% -8.57% 38.59% -12.57% 56.95% 199.67% -55.08% 70.15% -173.51% -687.78% -372.25% -119.24% -81.21% -9.76% -17.87% 8.22% 39.83% -10.62% -19.82% -25.79% 0.40% 89.64% 162.65% -558.22% -127.06% -52.38% -10.51% 0.84% 17.59% -15.80% 50.99% -28.79% 304.73% -80.05% -24.73% -8.77% 55.66% -50.28% -3.26% -26.52% 0.02% -14.81% 6.53% 36.99% 43.24% 38.24% -23.36% -5.74% 234.44% 601.35% -92.54% -9.49% 14.63% 13.73% 12.40%            
      other operating expenses:
                                                                                        
      general and administrative
    15,753,000 19,215,000 13,872,000 12,540,000 11,999,000 9,048,000 10,401,000 14,740,000 11,216,000 12,273,000 7,596,000 10,783,000 12,070,000 14,395,000 11,003,000 9,692,000 8,294,000 6,585,000 8,874,000 11,104,000 8,007,000 7,930,000 11,713,000 6,979,000 8,939,000 8,977,000 7,978,000 8,918,000 9,959,000 8,693,000 10,327,000 9,787,000 7,735,000 6,567,000 9,529,000 10,309,000 9,206,000 13,312,000 11,155,000 10,359,000 10,214,000 7,724,000 9,461,000 8,296,000 8,720,000 7,554,000 7,884,000 8,159,000 7,941,000 6,784,000 7,720,000 7,482,000 6,939,000 5,530,000 5,695,000 5,527,000 4,501,000 3,732,000 5,559,000 4,550,000 4,699,000 5,758,000 3,684,000 4,664,000 4,113,000 4,817,000 4,479,000 2,893,000 5,439,000 4,857,000 4,413,000 3,117,000 4,452,000 3,185,000           
      exploration and pre-development
    4,616,000 4,881,000 9,554,000 8,809,000 4,501,000 5,744,000 10,553,000 6,682,000 4,342,000 6,966,000 13,686,000 6,893,000 4,967,000 6,905,000 15,128,000 11,200,000 12,808,000                                                                    
      suspension costs
    3,246,000                                                                                    
      provision for closed operations and environmental matters
    1,297,000 4,965,000 1,268,000 844,000 790,000 920,250 1,542,000 1,153,000 986,000 1,602,750 2,256,000 3,111,000 1,044,000 1,038,500 1,781,000 1,472,000  3,074,250 7,564,000 1,024,000 3,709,000   1,037,000     570,000    1,262,000       1,576,000            1,845,000                   12,394,750 3,176,000             
      other operating expense
    5,236,000 -4,169,000 3,871,000 -590,000 1,053,000 -12,020,500 -13,828,000  -16,971,000 -682,250 1,555,000 -4,262,000 -22,000 952,000 902,000 1,945,000 2,463,000 3,614,000 3,344,000 3,643,000 3,639,000 3,013,000 3,497,000 1,439,000 915,000 1,362,000 437,000 657,000 587,000 -171,000 448,000 638,000 515,000 898,000 134,000 697,000 690,000 937,000 954,000 622,000 640,000 1,040,000 743,000 766,000 628,000 442,000 442,000 693,000 718,000 70,000 342,000 205,000 1,024,000 1,138,000 736,000 1,605,000 944,000 1,959,000 1,612,000 2,270,000 1,817,000 1,309,000 1,460,000 1,601,000 964,000 1,674,000 1,091,000 814,000 960,000 594,000 1,068,000 37,000 1,456,000            
      total other operating expenses
    30,148,000 28,169,000 31,822,000 25,768,000 21,649,000 30,197,000 36,811,000 10,830,000 14,096,000 49,262,000 46,118,000 32,848,000 29,395,000 34,466,000 33,906,000 29,551,000    32,798,000    24,205,000    23,234,000    31,246,000    27,232,000                          9,594,750 13,023,000 13,474,000                     
      income from continuing operations
    223,107,000                                                                 8,939,250 25,946,000 -3,766,000 -10,309,000                
      other expense:
                                                                                        
      interest expense
    -5,656,000 -5,526,000 -13,405,000 -11,099,000 -11,551,000 -13,784,000 -10,901,000 -12,505,000 -12,644,000 -12,133,000 -10,710,000 -10,311,000 -10,165,000 -11,008,000 -10,874,000 -10,505,000 -10,406,000 -10,461,000 -10,469,000 -10,271,000 -10,744,000 -10,650,000 -10,779,000 -11,829,000 -16,311,000 -8,444,250 -11,777,000 -11,335,000 -10,665,000                        -704,000       -1,496,000 -477,000       -6,842,000 -5,796,000 -165,000 41,000 -133,000 -369,000 -74,000           
      fair value adjustments
    -5,945,000 -18,412,000 17,625,000 9,615,000 3,627,000 -9,008,000 3,654,000 5,002,000 -1,852,000 8,699,000 -6,397,000 -2,558,000 3,181,000 9,980,000 -4,240,000 -16,428,000 5,965,000                                                                    
      net foreign exchange gain
    498,000 -892,000 305,000 -3,517,000 -356,000 852,250 -3,246,000 2,673,000 3,982,000 108,500 4,176,000 -3,850,000 108,000 2,027,750 5,667,000 4,482,000    -1,907,000 -2,064,000   -3,205,000 6,636,000   -4,381,000 -3,133,000   2,476,000 2,592,000   -3,883,000    -1,885,000 -8,203,000   -1,833,000 12,274,000   -5,382,000 4,134,000                                    
      other income
    3,549,000 -5,612,000 2,433,000 1,511,000 942,000 505,000 1,229,000 1,180,000 1,512,000 1,106,250 1,657,000 1,376,000 1,392,000 1,207,000 1,853,000 1,470,000  -48,000 247,000      -527,000   -1,187,000     -56,000                                                    
      total other expense
    -7,554,000   -3,490,000 -7,338,000 -5,479,000 -9,264,000 -3,650,000 -9,002,000 -8,025,250 -11,274,000 -15,343,000 -5,484,000   -20,981,000    -30,519,000 -14,844,000 -10,657,750 -16,068,000 -23,276,000     -16,625,000    -2,941,000 -13,733,750 -24,931,000                                                  
      income before income and mining taxes
    215,553,000 188,293,000 155,603,000 90,266,000 45,017,000 19,993,000 13,211,000 36,950,000 -3,938,000   -10,532,000 69,000 -8,376,000 -33,053,000 -13,269,000 9,784,000 4,824,000 -5,512,000 -4,057,000 23,605,000                                                                
      income and mining tax provision
    -50,900,000 -53,884,000 -54,877,000 -32,561,000 -16,145,000   -9,080,000 -1,815,000        -5,631,000                                                                    
      net income from continuing operations
    164,653,000                                                                                    
      net income from discontinued operations, net of taxes
    -183,681,000                                                                                    
      net income
    -19,028,000 134,409,000 100,726,000 57,705,000 28,872,000 11,924,000 1,761,000 27,870,000 -5,753,000 -42,935,000 -22,415,000 -15,694,000 -3,173,000 -4,452,000 -23,526,000 -13,523,000 4,153,000 11,875,000 -979,000 785,000 18,971,000 795,000 13,628,000 -14,028,000 -17,185,000 -7,976,000 -19,516,000 -46,532,000 -25,533,000 -23,693,000 -23,184,000 12,074,000 8,240,000 -27,749,000 1,412,000 -24,016,000 26,834,000 20,262,000 25,789,000 24,116,000 -618,000 -62,963,000 -9,890,000 -26,667,000 12,552,000 16,905,000 3,676,000 -14,399,000 11,641,000 -2,908,000 -8,458,000 -24,858,000 11,094,000 743,000 -885,000 2,524,000 12,572,000 18,569,000 55,921,000 33,317,000 43,357,000 -9,736,000 19,791,000 17,084,000 21,844,000 32,069,000 25,946,000 -3,756,000 -40,979,000 15,482,000 8,232,000 12,485,000 24,337,000 8,143,000           
      yoy
    -165.90% 1027.21% 5619.82% 107.05% -601.86% -127.77% -107.86% -277.58% 81.31% 864.40% -4.72% 16.05% -176.40% -137.49% 2303.06% -1822.68% -78.11% 1393.71% -107.18% -105.60% -210.39% -109.97% -169.83% -69.85% -32.69% -66.34% -15.82% -485.39% -409.87% -14.62% -1741.93% -150.27% -69.29% -236.95% -94.52% -199.59% -4442.07% -132.18% -360.76% -190.43% -104.92% -472.45% -369.04% 85.20% 7.83% -681.33% -143.46% -42.07% 4.93% -491.39% 855.71% -1084.87% -11.76% -96.00% -101.58% -92.42% -71.00% -290.73% 182.56% 95.02% 98.48% -130.36% -23.72% -554.85% -153.31% 107.14% 215.18% -130.08% -268.38% 90.13%               
      qoq
    -114.16% 33.44% 74.55% 99.86% 142.13% 577.12% -93.68% -584.44% -86.60% 91.55% 42.83% 394.61% -28.73% -81.08% 73.97% -425.62% -65.03% -1312.97% -224.71% -95.86% 2286.29% -94.17% -197.15% -18.37% 115.46% -59.13% -58.06% 82.24% 7.77% 2.20% -292.02% 46.53% -129.69% -2065.23% -105.88% -189.50% 32.44% -21.43% 6.94% -4002.27% -99.02% 536.63% -62.91% -312.45% -25.75% 359.87% -125.53% -223.69% -500.31% -65.62% -65.97% -324.07% 1393.14% -183.95% -135.06% -79.92% -32.30% -66.79% 67.85% -23.16% -545.33% -149.19% 15.85% -21.79% -31.88% 23.60% -790.79% -90.83% -364.69% 88.07% -34.06% -48.70% 198.87%            
      preferred stock dividends
    -132,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000 -138,000       -138,000 -138,000 -3,408,000 -3,408,000 -3,409,000 -3,408,000 -3,408,000 -3,408,000 -3,408,000 -3,409,000 -3,408,000 -610,000 -138,000 -138,000 -138,000           
      net income applicable to common stockholders
    -19,160,000 134,271,000 100,588,000 57,567,000 28,734,000 11,786,000 1,623,000 27,732,000     -3,311,000                                                                        
      comprehensive income:
                                                                                        
      change in fair value of derivative contracts designated as hedge transactions and other
    -2,157,000                                                                                    
      comprehensive income from continuing operations
    162,496,000                                                                                    
      comprehensive loss from discontinued operations
    -183,681,000                                                                                    
      comprehensive income
    -21,185,000 140,051,000 96,329,000 60,958,000 31,306,000 4,541,000 4,932,000 21,382,000 -11,156,000   -10,462,000 3,343,000 6,961,000 -36,218,000 51,825,000 -29,012,000 19,123,000 -7,246,000 2,405,000 20,803,000 -5,096,500 19,778,000     -42,992,000 -21,274,000 -37,980,000 -19,438,000 6,912,000 6,136,000 -30,238,000 9,048,000 -21,138,000 30,038,000 16,602,000 25,174,000 25,355,000 447,000 -63,953,000 -10,281,000 -27,822,000 14,488,000 9,735,000 5,952,000 -16,587,000 12,991,000 -3,003,000 -5,969,000 -26,802,000 8,263,000 -1,957,000 2,200,000 1,938,000 12,353,000 11,712,000 55,123,000 32,235,000 43,713,000 -10,105,000 19,974,000 17,313,000 20,866,000 36,868,000 28,574,000 -9,674,000 -50,546,000 20,292,000 9,629,000 16,499,000 28,286,000 9,092,000           
      net income per common share:
                                                                                        
      basic:
                                                                                        
      continuing operations
    250                                                                                    
      discontinued operations
    -280                                                                                    
      basic income per common share after preferred dividends
    -30 72.5 150 90 50 10  40     -10 -10 -40 -30 10 -4,240 -200 100 40 -7.5 30     -100 -50 -50 -50 30 20 -70  -60 70 50 70 60  -160 -30  30  10  30 -10 -30 -80 40   10 40 70 200 120  47.5 60 60                     
      diluted income per share:
                                                                                        
      diluted income per common share after preferred dividends
    -0.03 200 150 90 50 20  40     -10 -10 -40 -30 10 -4,140 -200 100 30 -7.5 30     -100 -50 -50 -50 30 20 -70  -60 70 50 70 60  -160 -30  30  10  30 -10 -30 -80 40   10 40 60 190 110  45 60 50                     
      weighted-average number of common shares outstanding - basic
    670,392  669,194,000 636,928,000 632,047,000  621,921,000 617,106,000 616,199,000  607,896,000 604,088,000 600,075,000   539,401,000 538,490,000  536,966,000 535,531,000 534,101,000  529,838,000 525,243,000 523,215,000  489,971,000 486,065,000 482,829,000  452,636,000 400,619,000 399,322,000  398,848,000 396,178,000 395,370,000  387,578,000 383,790,000 379,022,000  377,508,000 371,295,000 368,789,000  359,472,000 344,216,000 342,666,000  342,638,000 303,566,000 285,171,000  285,492,000 285,312,000 285,292,000  279,541,000 279,347,000   256,095,000 248,549,000   236,379,000 136,148,000     120,307,000            
      weighted-average number of common shares outstanding - diluted
    675,154  671,938,000 639,739,000 634,708,000  625,739,000 622,206,000 616,199,000  607,896,000 604,088,000 600,075,000   539,401,000 544,061,000  536,966,000 542,262,000 540,527,000  535,788,000 525,243,000 523,215,000  489,971,000 486,065,000 482,829,000  452,636,000 403,610,000 401,923,000  401,258,000 396,178,000 398,149,000  389,918,000 387,512,000 379,022,000  377,508,000 371,295,000 369,691,000  362,262,000 344,216,000 350,018,000  342,638,000 303,566,000 297,164,000  285,492,000 295,160,000 296,928,000  295,000,000 295,756,000   270,508,000 266,374,000   244,337,000 136,148,000     120,818,000            
      ramp-up and suspension costs
     3,277,000 3,257,000 4,165,000 3,306,000 9,567,000 13,679,000 5,538,000 14,523,000 27,568,000 21,025,000 16,323,000 11,336,000     5,998,000 6,910,000 5,786,000 4,318,000 802,000 1,541,000 9,572,000 12,996,000                                                            
      income from operations
     220,039,000 148,645,000 93,756,000 52,355,000 38,137,000 22,475,000 40,600,000 5,064,000 -42,397,000 -12,641,000 4,811,000 5,553,000 -9,449,000 -25,459,000 7,712,000 14,758,000 21,821,000 -8,572,000 26,462,000 38,449,000 25,338,000 31,329,000 9,874,000 -14,960,000 7,605,000 -5,113,000 -43,477,000 -16,124,000 -24,455,000 -30,376,000 3,756,000 11,949,000 23,855,000 20,942,000 3,975,000 15,871,000 21,522,000 38,240,000 41,610,000 15,573,000 -2,046,000 -21,197,000 -17,290,000 4,922,000 2,413,000 6,271,000 5,032,000 7,911,000 700,000 1,741,000 -32,622,000 -2,213,000 6,185,000 8,726,000  25,436,000 31,630,000 43,489,000 53,791,000 68,735,000 -133,302,000 41,501,000 24,592,000 15,654,000 13,846,750 29,305,000 1,846,000 -12,944,000 9,268,000 5,295,000 9,256,000 26,657,000 7,557,000           
      yoy
     476.97% 561.38% 130.93% 933.87% -189.95% -277.79% 743.90% -8.81% 348.69% -50.35% -37.62% -62.37% -143.30% 197.00% -70.86% -61.62% -13.88% -127.36% 168.00% -357.01% 233.18% -712.73% -122.71% -7.22% -131.10% -83.17% -1257.53% -234.94% -202.52% -245.05% -5.51% -24.71% 10.84% -45.24% -90.45% 1.91% -1151.91% -280.40% -340.66% 216.40% -184.79% -438.02% -443.60% -37.78% 244.71% 260.20% -115.43% -457.48% -88.68% -80.05%  -108.70% -80.45% -79.94%  -62.99% -123.73% 4.79% 118.73% 339.09% -1062.70% 41.62% 1232.18% -220.94% 49.40% 453.45% -80.06% -148.56% 22.64%               
      qoq
     48.03% 58.54% 79.08% 37.28% 69.69% -44.64% 701.74% -111.94% 235.39% -362.75% -13.36% -158.77% -62.89% -430.12% -47.74% -32.37% -354.56% -132.39% -31.18% 51.74% -19.12% 217.29% -166.00% -296.71% -248.74% -88.24% 169.64% -34.07% -19.49% -908.73% -68.57% -49.91% 13.91% 426.84% -74.95% -26.26% -43.72% -8.10% 167.19% -861.14% -90.35% 22.60% -451.28% 103.98% -61.52% 24.62% -36.39% 1030.14% -59.79% -105.34% 1374.11% -135.78% -29.12%   -19.58% -27.27% -19.15% -21.74% -151.56% -421.20% 68.76% 57.10% 13.05% -52.75% 1487.49% -114.26% -239.66% 75.03% -42.79% -65.28% 252.75%            
      other income:
                                                                                        
      total other income
     -967,500 6,958,000           -8,387,250 -7,594,000  -4,974,000 -10,575,750 3,060,000      -3,287,000 -11,719,000 -16,017,000 -14,234,000  2,579,250 4,513,000 8,745,000    -11,896,000 -18,108,000                         -3,230,500 -13,630,000 747,000                     
      change in fair value of derivative contracts designated as hedge transactions - inclusive of tax
     322,500 -4,397,000                                                                                  
      change in fair value of derivative contracts designated as hedge transactions
       3,253,000 2,434,000 -2,180,000 3,171,000 -6,488,000 -5,403,000 91,000 -11,384,000 5,232,000 6,516,000 4,872,750 -12,692,000 65,348,000 -33,165,000 -703,750 -6,267,000 1,620,000 1,832,000 -700,250 6,150,000 10,384,000 -19,335,000 1,127,750 -3,288,000 3,540,000 4,259,000 -883,250 3,743,000 -5,203,000 -2,073,000 -1,778,000 6,760,000 2,047,000 3,261,000 -3,704,000 -1,602,000 46,000                                             
      write down of property, plant and equipment
         110,000 14,464,000                                                                              
      income and mining tax benefit
         -8,069,000 -11,450,000   5,682,000 1,500,000   3,924,000 9,527,000 -254,000  25,645,000 4,533,000 4,842,000                                                                 
      other operating income
           -17,283,000                                                                  -166,000           
      net loss applicable to common stockholders
            -5,891,000 -10,424,000 -22,553,000 -15,832,000                                                                         
      comprehensive loss:
                                                                                        
      basic loss per common share after preferred dividends
            -10 -17.5 -40 -30            -30 -30 -10 -40                 -70    -40                                     
      diluted loss per common share after preferred dividends
            -10 -17.5 -40 -30            -30 -30 -10 -40                 -70    -40                                     
      loss before income and mining taxes
             -8,594,500 -23,915,000                                                                          
      comprehensive loss
             -10,229,500 -33,799,000             -3,644,000 -36,520,000 -7,328,000 -22,804,000                                                          
      cash dividends declared per common share
             3.125 6.25 6.25 10 3.125 6.25 6.25  781.25 1,125 1,125  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  1.875 2.5 2.5  9.375 2.5 20                             
      income and mining tax expense
               -5,162,000 -3,242,000                                                                        
      care and maintenance costs
                 4,134,750 5,092,000 5,242,000                                                                     
      income applicable to common stockholders
                 -4,590,000 -23,664,000  4,015,000    18,833,000        -25,671,000    8,102,000    26,696,000    -756,000    12,414,000    11,503,000                                    
      weighted-average number of common shares outstanding – basic
     651,965,000    620,848,000    605,668,000    557,344,000 554,531,000   536,192,000    527,329,000    490,449,000    433,419,000    397,394,000    386,416,000    373,954,000    353,442,000    318,679,000    285,375,000    280,956,000   278,448,000 251,146,000   242,039,000    126,341,000 122,350,000 120,420,000 120,440,000  119,951,000           
      weighted-average number of common shares outstanding – diluted
     655,768,000    622,535,000    605,668,000    557,344,000 554,531,000   542,176,000    527,329,000    490,449,000    433,419,000    397,394,000    389,322,000    373,954,000    357,435,000    318,679,000    297,566,000    297,033,000   296,244,000 269,601,000   261,231,000    126,341,000 122,777,000 121,071,000 120,975,000  120,526,000           
      income applicable to common shareholders
                   -13,661,000  5,701,500 -1,117,000 647,000  -4,499,750 13,490,000     -46,670,000  -821,000 -23,322,000 11,936,000  954,000 1,274,000 -24,154,000  12,217,750 25,651,000 23,978,000  -6,104,750 -10,028,000   126,250 3,538,000   -5,659,000 -8,596,000 -24,996,000 10,956,000 605,000 -1,023,000 2,386,000 12,434,000 18,431,000 55,783,000 33,179,000 43,219,000 -13,144,000 16,383,000 13,675,000 18,436,000 6,383,000 22,538,000 -7,164,000 -44,388,000 12,074,000 7,622,000 12,347,000 24,199,000 8,005,000           
      sales of products
                    186,499,000 185,078,000 193,560,000 217,983,000 210,852,000 188,890,000 199,703,000 166,355,000 136,925,000 224,945,000 161,532,000 134,172,000 152,617,000 136,520,000 143,649,000 147,259,000 139,709,000 160,113,000 140,839,000 134,279,000 142,544,000 164,245,000 179,393,000 171,302,000 131,017,000 115,337,000 104,941,000 104,197,000 119,092,000 121,985,000 135,507,000 117,502,000 125,787,000 114,180,000 106,629,000 85,330,000 76,450,000 81,100,000 81,871,000 67,019,000 91,153,000 102,867,000 120,543,000 117,860,000 136,364,000 134,460,000 115,847,000 88,631,000 79,875,000 88,036,000 95,181,000 64,525,000 63,995,000 45,960,000 60,149,000 49,228,000 60,100,000 53,145,000           
      care and maintenance
                    6,205,000                                                                    
      benefit from closed operations and reclamation
                    901,000             1,133,500 1,852,000       1,194,750 2,162,000   2,745,750 1,181,000                                          
      total other operating expense
                    30,671,000 25,740,250 43,800,000  26,363,000 21,426,000 22,159,000  26,332,000 17,713,000 19,993,000  19,568,000 23,190,000 36,952,000  26,837,000 23,371,000 22,695,000  19,045,000                                                
      net foreign exchange loss
                    -2,038,000                    -2,262,000                                 -12,000 -5,969,000 -3,000             
      other non-operating income
                    1,505,000                                                                    
      cash dividends per common share
                    6.25    8.75    2.5                                                            
      exploration
                     6,998,250 13,675,000 8,367,000 5,951,000 7,954,000 3,407,000 1,962,000 2,530,000 2,363,000 4,808,000 4,346,000 4,402,000 8,086,000 12,411,000 7,838,000 7,360,000 5,888,000 7,255,000 5,853,000 4,514,000 4,549,000 3,859,000 3,362,000 2,950,000 2,997,000 5,540,000 4,592,000 4,615,000 4,612,000 5,797,000 3,140,000 4,150,000 4,991,000 5,797,000 6,221,000 6,493,000 7,343,000 11,722,000 7,146,000 5,611,000 7,947,000 9,872,000 5,839,000 3,301,000 5,439,000 6,917,000 5,820,000 3,429,000 4,246,000 2,737,000 5,454,000 7,340,000 6,079,000 6,508,000 5,426,000 3,821,000 4,063,000           
      pre-development
                     1,761,500 3,433,000 2,874,000 739,000 585,000 759,000 563,000 535,000 615,000 881,000 798,000 856,000 1,272,000 1,195,000 1,415,000 1,005,000 1,387,000 1,757,000 1,052,000 1,252,000 1,662,000 550,000 521,000 404,000 379,000 1,696,000 1,618,000 521,000 722,000 391,000 437,000 419,000 1,401,000 3,444,000 4,512,000 4,791,000 5,670,000 5,409,000 3,471,000 3,366,000 2,694,000 1,752,000                          
      foundation grant
                           1,970,000                                                             
      gain on derivative contracts
                     -1,173,000 12,148,000  473,000   -14,002,000 7,893,000 -1,252,000 -4,718,000 3,798,000 -1,799,000 -18,000 19,460,000 16,804,000 4,007,000 -4,702,000 -11,226,000 2,487,000   7,000 -6,000   3,347,000 -887,000 5,792,000 11,694,000 -411,000 -11,601,000 9,452,000 -5,537,000 -4,564,000 6,541,000 21,539,000   6,171,000  -919,000 40,382,000 559,000    1,999,000                     
      gain on exchange of investments
                     289,500   1,158,000                                                                
      unrealized gain on investments
                     -1,779,250 -2,861,000 -750,000  858,000 3,979,000 6,409,000 -978,000    96,000 -615,250 -2,207,000 -564,000 310,000 -18,250 -124,000 -276,000  122,000 49,000 1,150,000    -117,000 -2,843,000   -608,000 688,000                                    
      foreign exchange gain
                     6,000 3,995,000   308,750 -2,196,000   -1,685,250 773,000   714,000 -2,212,000   -2,727,250 -4,764,000   -1,928,250 2,375,000   4,879,500 9,077,000   1,512,750 7,299,000                                      
      loss on derivative contracts
                       -17,313,000  -3,193,750 -6,666,000              -7,809,000                        -2,034,000 -9,562,000 -13,195,000                      
      other expense
                       -278,000  -395,500 -406,000 -649,000  -851,750 -1,096,000  -1,124,000                                                        
      unrealized loss on investments
                        -3,506,000     -1,230,000 -126,000 -1,129,000             -711,000 -107,000 -100,000   -474,000 -2,830,000                                      
      other non-operating expense
                        -161,000                                                                
      income and mining tax benefit
                        -4,634,000                                                                
      research and development
                             -79,000 53,000 158,000 403,000 399,000 1,269,000 2,337,000 1,436,000 1,151,000 1,130,000 312,000 683,000                                                
      loss on disposition of properties, plants, equipment and mineral interests
                         13,000 -14,000   1,166,500 24,000                                                          
      provision for closed operations and reclamation
                         701,750 1,254,000   882,250 1,907,000       1,261,000 2,940,000                                                  
      acquisition costs
                         7,000 2,000 6,000 5,000 52,000 183,000 397,000 13,000 389,000 6,139,000 1,010,000 2,507,000     528,000 1,765,000 402,000   15,000 2,147,000                                         
      gain on disposition of investments
                             -4,000 927,000                                                          
      income before income taxes
                         -267,000 15,261,000 -13,402,000 -18,247,000 -12,068,000 -21,130,000 -57,711,000 -32,749,000 -28,910,000 -25,863,000 12,501,000 9,008,000 10,507,000 -3,989,000 -7,921,000 -2,237,000 25,087,000 35,242,000 35,612,000 1,036,000 -2,460,000 -15,390,000 -26,799,000 13,991,000 12,727,000 3,856,000 -19,424,000 15,424,000 -10,781,000 -11,000,000 -31,653,000 18,509,000 1,600,000  3,217,000 19,887,000 30,084,000 83,246,000 52,959,000 66,853,000 17,206,250 27,871,000 25,339,000 15,615,000      1,438,000 11,303,000             
      income tax benefit
                         1,062,000 -1,633,000 -626,000 1,062,000 4,092,000 1,614,000 11,179,000 7,216,000 5,217,000 2,679,000 -427,000 -768,000 4,594,250 5,401,000 -16,095,000 29,071,000 -4,825,000 -9,453,000 -11,496,000  -60,503,000 5,500,000 132,000  4,178,000 -180,000 5,025,000  7,873,000 2,542,000 6,795,000         -23,496,000    6,229,000 8,708,000 -598,000 749,000 -259,000 3,866,000 6,794,000 1,182,000 1,943,000            
      loss on disposition or impairment of properties, plants, equipment and mineral interests
                           677,000                                                             
      loss applicable to common shareholders
                           -14,166,000  -22,998,750 -19,654,000                 -26,805,000    -14,537,000                                     
      gain on disposition of properties, plants, equipment and mineral interests
                            -104,000     -843,500 -3,208,000   -1,231,000 -4,830,000                                                  
      benefit from closed operations and environmental matters
                            516,000   1,052,000    1,420,000    985,000 1,119,000    1,041,000   9,335,000 467,000   1,267,000 1,104,000    1,794,000   2,235,000 2,178,000 1,864,000 5,521,000 1,341,000 1,021,000 195,409,000 962,000 1,389,000 3,376,000 604,000 510,000 896,000 830,000 946,000   45,750,000 653,000           
      loss applicable to common stockholders
                            -17,323,000                                                            
      suspension-related costs
                             3,285,000 3,722,000 2,266,000 2,778,000 2,356,000 6,519,000                                                      
      unrealized holding gains on investments
                                 -2,456,000 3,000 41,000  615,000 892,000 847,000 -256,000 -632,000 987,000 1,193,000 65,000 -140,000 -391,000 -1,321,000 -891,000 -1,487,000 -149,000 -996,000 1,350,000 -1,794,000 -877,000  -2,831,000 -2,227,000 3,085,000      967,000 1,284,000 183,000 -510,000 -978,000 2,041,000 1,687,000 -6,110,000 -1,452,000 4,810,000 -3,677,000 4,014,000 3,949,000 949,000           
      gain on disposition or impairment of properties, plants, equipment and mineral interests
                               4,642,000                                                         
      unrealized holding losses on investments
                                    -31,000                   -1,747,000        -1,082,000                         
      loss on disposition of investments
                                 2,000 -36,000   1,000          -166,000                                         
      interest income and other income
                                 -73,500 -346,000                                                      
      interest expense, net of amount capitalized
                                 -10,925,000 -10,146,000 -10,079,000  -9,589,000 -9,358,000 -10,543,000  -5,141,000 -5,574,000 -5,370,000  -6,039,000 -6,617,000 -6,541,000  -5,076,750 -6,505,000 -6,962,000  -3,626,500 -7,348,000 -6,454,000          -499,000 -505,000 -529,000 -678,000 -1,095,000 -2,801,000                  
      reclassification of loss on disposition or impairment of marketable securities included in net income
                                     41,750    250,000    748,250  166,000                                         
      unrealized loss and amortization of prior service on pension plans
                                      -16,000 -16,000            -1,192,000                                     
      lucky friday suspension-related costs
                                   6,801,000 5,017,000 6,916,000 4,780,000 8,024,000 1,581,000                1,498,000 6,564,000 6,114,000 6,465,000 6,166,000                            
      interest income and other income and expense
                                   108,000                                                     
      loss on disposal of investments
                                        -167,000                                                
      interest expense, net of amounts capitalized
                                    -9,794,000    -8,522,000    -5,711,000    -6,192,000    -6,840,000                                    
      reclassification of disposal and impairment of investments included in net income
                                        167,000                                                
      unrealized gain and amortization of prior service on pension plans
                                        32,000                                                
      interest and other income
                                     507,000 541,000 319,000 325,000 161,000 145,000 113,000 88,000 743,000 100,000 35,000 38,000 78,000 32,000 97,000 79,000 919,000 -829,000 685,000 -113,000 -206,000 47,000 32,000 149,000   105,000 18,000 -11,000 70,000 16,000 51,000 749,000 26,000 481,000 593,000  2,071,000 2,183,000             
      unrealized income on investments
                                        327,000                                                
      other operating expenses: - sum
                                           16,842,000            37,733,000                   3,095,750 11,737,000             
      other income: - sum
                                           -5,998,000            969,000                   -215,250 2,047,000             
      income tax provision
                                            -1,654,000    -1,439,000    -3,783,000    -7,415,000       -19,642,000  -2,526,500 -8,080,000 -8,255,000          -789,000           
      reclassification of impairment of investments included in net income
                                            1,000,000    2,827,000                                        
      defined benefit pension plan costs
                                                 -298,000    841,500 3,366,000                                  
      provision (credit) for closed operations and reclamation
                                                 902,250 1,238,000   1,143,000 933,000                                  
      aurizon acquisition costs
                                                     29,000 768,000 20,308,000 5,292,000                                
      gains on sale of investments
                                                     49,250                                   
      reclassification of net gain on sale of marketable securities included in net income
                                                 606,250 2,425,000   -49,250  -197,000                                 
      lucky friday suspension-related income
                                                     -350,250 -59,000                                  
      gain on sale of investments
                                                       197,000         611,000 147,000   588,000    8,097,000                
      lucky friday suspension-related expense
                                                       -2,840,000                                 
      provision (credit) for closed operations and environmental matters
                                                         830,000                               
      gain on sale or impairment of investments
                                                             152,750                           
      reclassification of net (gain) loss on sale or impairment of marketable securities included in net income
                                                                                        
      other operating income:
                                                                                        
      reclassification of net gain on sale included in net income
                                                                -611,000                        
      basic income per common share after preferred stock dividends
                                                                160    80                    
      diluted income per common share after preferred stock dividends
                                                                150    70                    
      gain on sale of properties, plants, equipment, and mineral interests
                                                                     -1,558,500 -6,000                  
      termination of employee benefit plan
                                                                                        
      loss on impairment of investments
                                                                   -739,000                     
      debt-related fees
                                                                     -248,000 14,000                  
      reclassification of loss on sale or impairment of marketable securities included in net income
                                                                 184,750  739,000                     
      change in derivative contract
                                                                     391,250 941,000 192,000                 
      (gain) loss on disposition of properties, plants, and equipment
                                                                                        
      change in derivative contracts
                                                                                        
      gain on disposition of property, plants, equipment and mineral interests
                                                                                        
      preferred shares issued for debt-related fees
                                                                                        
      income from continuing operations before income taxes
                                                                     9,196,250 26,544,000 -4,515,000 -10,050,000                
      income from discontinued operations, net of taxes
                                                                       -15,000 -19,298,000                
      gain on sale of discontinued operations, net of taxes
                                                                       25,000                 
      reclassification of (gain) loss on sale or impairment of marketable securities included in net income
                                                                     754,500                   
      basic income per common share:
                                                                                        
      income from discontinued operations
                                                                        -150                
      loss on sale of discontinued operations
                                                                                        
      income per common share
                                                                     30 100 -50 -350                
      diluted income per common share:
                                                                                        
      pre-development expense
                                                                            76,000 951,000           
      gain on sale of properties, plants and equipment
                                                                       -506,000   -15,968,500 -47,000 -63,798,000            
      reclassification of gain on sale of marketable securities included in net income
                                                                        -8,115,000                
      basic and diluted income per common share:
                                                                                        
      loss on impairment of discontinued operations, net of taxes
                                                                        -11,372,000                
      loss on impairment of discontinued operations
                                                                        -90                
      depreciation and amortization
                                                                         37,000 48,000 28,000 44,000 179,000           
      interest income
                                                                         2,525,000   2,209,000 1,449,000           
      income from operations, before income taxes
                                                                         11,616,000    8,932,000           
      basic and diluted income per common share after preferred dividends
                                                                         100 92.5 100 200 70           
      net foreign exchange losses
                                                                            -6,103,000            
      net income before income taxes
                                                                            22,394,000            
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2005-12-31 2005-02-23 2004-12-31 
                                                                                   
        assets
                                                                                   
        current assets:
                                                                                   
        cash and cash equivalents
      587,550,000 241,558,000 133,910,000 296,565,000 23,668,000 26,868,000 22,273,000 24,585,000 80,169,000 106,374,000 100,685,000 106,786,000 95,939,000 104,743,000 144,669,000 198,193,000 212,029,000  190,904,000 181,494,000 139,750,000 89,256,000 98,669,000 75,923,000 215,715,000 62,452,000 32,995,000 9,434,000 11,797,000 27,389,000 60,856,000 239,722,000 212,569,000 186,107,000 172,923,000 164,113,000 176,786,000 169,777,000 167,844,000 143,613,000 134,018,000 155,209,000 174,454,000 191,574,000 196,231,000 209,665,000 222,360,000 222,083,000 207,642,000 212,175,000 237,836,000 296,375,000 168,614,000 190,984,000 232,194,000 233,327,000 278,504,000 266,463,000 413,743,000 377,436,000 321,662,000 283,606,000 216,577,000 197,378,000 116,342,000 104,678,000 84,662,000 79,115,000 45,810,000 357,672,000 373,123,000 120,925,000 96,927,000 85,534,000 6,308,000 6,308 52,610,000 
        accounts receivable:
                                                                                   
        trade
      215,534,000 170,230,000 102,702,000 48,002,000 59,549,000 31,515,000 40,718,000 30,242,000 30,508,000 14,740,000 16,685,000 15,595,000 28,928,000 45,146,000 12,477,000 17,828,000 33,324,000  32,821,000 41,311,000 35,274,000  28,464,000 26,003,000 6,062,000 11,952,000 6,222,000 6,877,000 9,586,000 4,184,000 12,947,000 9,717,000 19,713,000 14,805,000 6,982,000 9,183,000 17,210,000 20,082,000 26,622,000 25,667,000 30,127,000 13,490,000 10,384,000 7,781,000 27,280,000 17,696,000 17,433,000 21,033,000 26,159,000 17,672,000 34,481,000 8,306,000 11,927,000 17,555,000 21,991,000 30,484,000 5,849,000 10,996,000    36,295,000 48,983,000 22,753,000 39,097,000 25,141,000 41,569,000 15,346,000 28,786,000 11,079,000 14,053,000 21,669,000 19,643,000 12,504,000 5,479,000 5,479 6,911,000 
        other
      26,615,000 17,110,000 20,568,000 15,387,000 20,520,000 17,538,000 16,218,000 19,051,000 19,767,000 18,376,000 15,286,000 15,121,000 13,216,000 10,695,000 12,846,000 7,696,000 8,586,000  10,152,000 9,334,000 8,475,000  6,642,000 3,851,000 9,188,000 6,421,000 8,056,000 7,367,000 5,162,000 7,443,000 7,612,000 8,925,000 8,911,000 7,003,000 9,031,000 12,307,000 22,234,000 9,780,000 14,122,000 32,952,000 16,786,000 16,401,000 12,970,000 14,220,000 5,215,000 6,792,000 9,767,000 8,978,000 10,650,000 4,689,000 17,263,000 20,228,000 8,383,000 7,466,000 7,827,000 6,662,000 6,445,000 9,313,000    545,000 829,000 648,000 571,000 2,286,000 639,000 1,998,000 1,886,000 5,128,000 7,834,000 6,696,000 10,153,000 10,572,000 12,116,000 12,116 15,025,000 
        inventories:
                                                                                   
        product inventories
      24,208,000 38,133,000 40,404,000 58,203,000 45,200,000 34,962,000 34,807,000 44,790,000 37,414,000 28,823,000                                                                    
        materials and supplies
      56,128,000 76,652,000 74,532,000 72,644,000 72,177,000 69,974,000 69,721,000 64,954,000 64,718,000 64,824,000 63,355,000 59,989,000 56,286,000 53,369,000 51,020,000 45,200,000 43,238,000  40,845,000 39,148,000 37,335,000  37,611,000 35,866,000 35,672,000 35,849,000 35,087,000 35,317,000 34,064,000 34,361,000 33,624,000 25,885,000 25,779,000 26,100,000 24,663,000 23,278,000 23,348,000 24,079,000 23,074,000 23,070,000 23,619,000 23,101,000 23,325,000 23,051,000 20,974,000 21,474,000 20,676,000 21,385,000 21,112,000 21,097,000 20,214,000 20,059,000 14,068,000 13,564,000 13,440,000 13,396,000 12,362,000 12,503,000 11,212,000 10,470,000 10,468,000 10,245,000 9,765,000 9,269,000 9,326,000 8,903,000            
        current investments
      19,568,000 59,644,000                                                                            
        other current assets
      28,038,000 26,017,000 15,391,000 24,059,000 25,199,000 33,295,000 22,230,000 16,608,000 22,674,000 27,125,000 18,410,000 27,040,000 22,527,000 16,471,000 14,733,000 13,389,000 16,927,000  12,744,000 10,198,000 12,971,000 4,041,000 7,301,000 9,567,000 18,794,000 11,931,000 10,400,000 15,524,000 8,239,000 11,179,000 21,510,000 17,006,000 17,369,000 13,715,000 16,317,000 8,955,000 8,256,000 12,125,000 10,451,000 7,999,000 9,289,000 9,453,000 15,957,000 14,040,000 15,337,000 12,312,000 7,516,000 5,934,000 13,016,000 8,324,000 20,526,000 18,893,000 12,519,000 8,858,000 12,230,000 20,062,000 14,851,000 21,967,000 19,461,000 2,336,000 2,673,000 3,683,000 4,496,000 5,468,000 4,210,000 4,578,000 5,126,000 5,141,000 3,207,000 4,802,000 5,934,000 2,308,000 5,111,000 4,737,000 3,546,000 3,546 5,607,000 
        assets of discontinued operations
                                                                                   
        total current assets
      957,641,000 629,344,000 387,507,000 514,860,000 246,313,000 214,152,000 205,967,000 200,230,000 255,250,000 260,262,000 248,414,000 259,155,000 244,950,000 267,727,000 283,920,000 322,396,000 343,956,000  310,280,000 331,178,000 297,917,000  235,156,000 214,881,000 342,542,000 179,124,000 178,926,000 145,418,000 144,107,000 164,150,000 198,329,000 352,362,000 366,105,000 320,325,000 311,335,000 291,758,000 315,155,000 303,384,000 310,001,000 311,135,000 276,854,000 269,533,000 291,163,000 299,084,000 308,325,000 316,359,000 318,439,000 346,880,000 332,271,000 343,635,000 389,886,000 399,117,000 258,231,000 282,898,000 330,949,000 339,496,000 353,430,000 362,744,000 542,812,000 522,315,000 471,783,000 432,021,000 300,118,000 258,054,000 190,686,000 166,463,000 154,875,000 134,073,000 159,842,000 442,021,000 449,584,000 261,960,000 246,176,000 172,003,000 93,777,000 93,777  
        non-current investments
      158,481,000 47,842,000                     17,362,000 12,162,000 4,919,000 6,207,000 7,349,000 5,815,000 6,768,000 6,583,000 7,190,000 7,449,000 7,652,000 7,561,000 7,098,000 4,729,000 5,104,000 5,002,000 6,356,000 4,453,000 2,086,000 1,515,000 2,003,000 2,672,000 4,334,000 4,920,000 7,022,000 7,466,000 8,730,000 7,019,000 8,364,000 8,766,000 9,429,000 9,614,000 9,023,000 2,671,000 3,584,000 3,923,000 3,305,000 4,161,000 5,237,000 1,194,000 1,452,000 1,262,000 1,785,000 2,157,000 2,483,000 3,351,000 6,530,000 7,914,000 8,429,000       
        restricted cash and cash equivalents
      1,172,000 1,174,000 1,172,000 1,183,000 1,177,000 1,177,000 1,184,000 1,171,000 1,163,000 1,165,000                                                                    
        property, plants, equipment and mine development
      2,123,209,000  2,732,999,000 2,714,439,000 2,700,896,000                                                                         
        operating lease right-of-use assets
      18,435,000 8,859,000 8,706,000 8,834,000 9,387,000 7,544,000 5,173,000 8,302,000 9,187,000 8,349,000 9,163,000 9,901,000 10,609,000 11,064,000 11,632,000 11,649,000 12,342,000  8,201,000 8,902,000 9,775,000  11,928,000 13,220,000 14,909,000 16,381,000 17,313,000 19,019,000 20,647,000                                                 
        other non-current assets
      117,355,000 32,599,000 24,010,000 25,932,000 28,266,000 30,171,000 36,026,000 33,931,000 32,630,000 38,471,000 34,164,000 36,009,000 41,439,000 32,304,000 4,202,000 3,665,000 7,936,000   3,721,000 3,836,000 306,124,000    7,336,000   10,019,000 10,195,000   13,954,000 14,509,000   2,609,000 4,884,000    2,783,000    9,415,000    5,867,000    1,883,000    17,317,000   4,662,000 5,604,000   8,007,000 9,225,000  33,653,000 35,662,000 31,170,000  24,807,000 24,290,000 25,547,000    
        total assets
      3,376,293,000 3,560,645,000 3,221,842,000 3,309,355,000 3,023,557,000 2,981,060,000 2,955,711,000 2,939,764,000 2,994,258,000 3,011,104,000 2,961,156,000 2,945,459,000 2,925,624,000 2,927,172,000 2,934,629,000 2,717,103,000 2,738,899,000  2,674,417,000 2,671,238,000 2,655,077,000 2,058,464,000 2,615,150,000 2,603,408,000 2,764,124,000 2,637,308,000 2,673,178,000 2,670,713,000 2,694,605,000 2,703,944,000 2,710,258,000 2,392,594,000 2,398,091,000 2,364,957,000 2,396,183,000 2,379,156,000 2,406,461,000 2,371,677,000 2,363,679,000 2,270,810,000 2,239,173,000 2,221,925,000 2,285,213,000 2,292,268,000 2,259,951,000 2,262,064,000 2,252,453,000 2,255,127,000 2,250,281,000 2,232,119,000 2,269,012,000 2,272,455,000 1,380,112,000 1,378,290,000 1,403,603,000 1,390,494,000 1,397,733,000 1,396,090,000 1,515,720,000 1,460,389,000 1,417,089,000 1,382,493,000 1,177,583,000 1,129,735,000 1,066,711,000 1,046,784,000 1,038,279,000 1,052,267,000 1,082,965,000 678,706,000 650,737,000 436,721,000 413,743,000 345,719,000 272,166,000 272,166  
        liabilities
                                                                                   
        current liabilities:
                                                                                   
        accounts payable and accrued liabilities
      97,855,000 102,282,000 99,475,000 87,909,000 77,263,000 88,957,000 86,976,000 80,732,000 81,289,000 81,737,000 87,148,000 81,653,000 83,704,000 84,747,000 87,850,000 84,997,000 73,786,000 -795,000 62,571,000 62,183,000 53,130,000  55,315,000 40,789,000 49,437,000 57,716,000 57,860,000 69,336,000 61,680,000 77,861,000 65,755,000 53,835,000 51,636,000 46,549,000 46,847,000 47,979,000 51,739,000 60,064,000 57,003,000 57,702,000 56,657,000 51,277,000 47,724,000 44,500,000 39,712,000 41,869,000 45,788,000 39,414,000 39,232,000 51,152,000 56,592,000 60,864,000 37,256,000 43,162,000 39,652,000 34,587,000 30,125,000 37,831,000 51,630,000 44,355,000 26,313,000 31,725,000 33,227,000 23,325,000 15,984,000 13,998,000 12,776,000 21,761,000 34,631,000 21,360,000 22,564,000 22,756,000 16,262,000 20,607,000 16,684,000 16,684 16,042,000 
        accrued payroll and related benefits
      13,592,000 38,119,000 27,932,000 25,915,000 18,954,000 22,834,000 26,447,000 25,938,000 28,783,000 28,240,000 22,671,000 25,993,000 41,141,000 37,579,000 26,385,000 26,945,000 34,864,000 1,270,000 26,493,000 24,270,000 22,800,000  29,201,000 24,561,000 34,478,000 26,916,000 23,147,000 21,357,000 36,435,000 30,034,000 29,488,000 23,661,000 21,420,000 31,259,000 29,085,000 25,919,000 38,554,000 36,515,000 28,696,000 23,712,000 19,873,000 27,563,000 23,497,000 23,163,000 18,320,000 27,956,000 22,586,000 22,533,000 17,359,000 18,769,000 18,128,000 16,796,000 15,806,000 10,760,000 10,124,000 9,182,000 9,008,000 12,878,000 11,369,000 10,343,000 9,600,000 10,789,000 8,957,000 6,832,000 7,637,000 14,164,000 11,401,000 11,177,000 11,302,000 18,306,000 16,184,000 12,948,000 13,913,000 13,205,000 10,452,000 10,452 9,405,000 
        accrued taxes
      44,891,000 23,410,000 17,889,000 8,324,000 9,081,000 6,312,000 4,563,000 2,474,000 5,585,000 3,501,000 3,064,000 4,036,000 6,318,000 4,030,000 7,344,000 8,341,000 16,128,000 6,457,000 8,557,000 4,838,000 7,854,000  7,890,000 8,451,000 5,842,000 4,776,000 2,160,000 1,434,000 9,109,000 7,727,000 8,274,000 6,143,000 7,273,000 5,919,000 5,081,000 14,205,000 11,089,000 9,061,000 5,990,000 4,344,000 8,958,000 8,915,000 7,078,000 2,420,000 3,891,000 4,241,000 6,319,000 10,442,000 12,619,000 7,881,000 3,729,000 5,312,000 9,824,000 12,321,000 9,743,000 3,736,000 13,244,000 10,354,000 9,766,000 9,678,000 14,709,000 16,042,000 10,607,000 4,984,000 7,182,000 6,240,000 7,208,000 2,599,000 3,111,000 4,770,000 3,703,000 2,822,000 3,802,000 6,412,000 2,529,000 2,529 2,379,000 
        finance leases
      3,601,000 7,173,000 7,908,000 7,770,000 7,904,000 8,169,000 7,299,000 7,874,000 8,610,000 9,752,000 11,293,000 11,213,000 9,040,000 9,483,000     5,637,000 6,223,000 6,706,000                                                         
        accrued reclamation and closure costs
      12,402,000 13,795,000 13,085,000 8,836,000 11,113,000 13,748,000 10,261,000 10,049,000 9,660,000 9,660,000 10,352,000 9,693,000 8,531,000 8,591,000 10,594,000 10,594,000 10,594,000  11,036,000 7,994,000 6,592,000  100,072,000 99,449,000 97,509,000 103,793,000 103,821,000 103,782,000 104,186,000 104,979,000 99,314,000 78,102,000 78,887,000 79,366,000 80,758,000 79,280,000 79,334,000 79,927,000 83,598,000 73,019,000 75,729,000 74,549,000 70,822,000 70,718,000 55,781,000 55,619,000 56,793,000 56,968,000 55,353,000 46,766,000 49,862,000 105,462,000 94,056,000 93,370,000 113,928,000 111,806,000 111,706,000 111,563,000 141,923,000 143,026,000 143,728,000 143,313,000 118,528,000 122,000,000 122,074,000 125,428,000 118,491,000 111,159,000 102,792,000 96,362,000 96,453,000 98,257,000 99,035,000 57,991,000 62,914,000 62,914 65,951,000 
        accrued interest
      2,906,000 7,678,000 2,911,000 14,372,000 5,161,000 14,316,000 5,192,000 14,368,000 5,190,000 14,405,000 5,191,000 14,404,000 5,191,000 14,454,000 5,184,000 14,435,000 5,232,000  5,221,000 14,480,000 5,175,000  4,935,000 12,914,000 4,305,000 5,804,000 15,039,000 5,984,000 15,017,000 5,961,000 15,044,000 5,976,000 14,555,000 5,745,000 14,450,000                                           
        derivative liabilities
      15,073,000 37,181,000    8,155,000    1,144,000    16,125,000                                                                
        other current liabilities
      3,529,000 1,926,000 10,770,000 4,452,000 9,635,000 1,730,000 11,960,000 14,090,000 13,520,000 9,021,000 5,652,000 4,348,000 11,428,000 3,457,000 5,765,000 109,000 109,000  103,000 116,000 123,000  149,000 126,000 7,661,000 6,172,000 8,528,000 898,000 6,696,000 5,937,000 1,205,000 1,388,000 7,066,000 10,371,000 7,968,000 11,268,000 18,173,000 10,064,000 17,033,000 10,290,000 16,068,000 6,884,000 15,056,000 6,236,000 14,695,000 5,797,000 15,643,000 8,057,000 15,228,000 6,781,000 17,576,000 8,110,000  3,335,000                        
        liabilities of discontinued operations
                                                                                   
        total current liabilities
      193,849,000 231,564,000 179,970,000 192,962,000 172,723,000 197,838,000 188,572,000 155,525,000 152,637,000 157,460,000 145,371,000 151,340,000 165,353,000 178,466,000 161,385,000 158,229,000 188,240,000  126,182,000 129,401,000 109,118,000  125,391,000 115,636,000 117,183,000 116,974,000 145,843,000 117,853,000 146,821,000 136,194,000 132,456,000 105,333,000 115,934,000 112,130,000 115,797,000 113,788,000 132,655,000 127,480,000 135,147,000 129,788,000 132,818,000 127,084,000 125,616,000 109,193,000 88,538,000 90,985,000 101,042,000 147,046,000 151,560,000 151,479,000 177,904,000 118,055,000 90,025,000 94,987,000 98,319,000 91,751,000 97,404,000 107,316,000 254,694,000 253,528,000 243,213,000 256,537,000 73,671,000 42,716,000 43,496,000 41,735,000 76,232,000 177,208,000 360,177,000 53,367,000 52,137,000 49,461,000 43,326,000 47,493,000 36,131,000 36,131  
        long-term debt including finance leases
      262,646,000 268,627,000 269,838,000 521,568,000 527,137,000 508,927,000 496,631,000 582,577,000 662,482,000 653,063,000 604,953,000 559,817,000 516,961,000 517,742,000                                                                
        deferred tax liabilities
      194,069,000  196,518,000 155,121,000 124,382,000  111,331,000                                                                       
        other non-current liabilities
      40,914,000 33,912,000 11,149,000 10,345,000 10,324,000 11,332,000 12,566,000 11,088,000 10,830,000 16,481,000 14,156,000 12,619,000 20,264,000 11,677,000 1,987,000 2,515,000 7,055,000  4,787,000 4,098,000 4,146,000 40,747,000 6,153,000 2,435,000 14,033,000 6,856,000 8,113,000 5,974,000 6,793,000 9,890,000  4,438,000 2,784,000 12,983,000  6,414,000 5,321,000 11,518,000  5,362,000 3,539,000 6,190,000  51,504,000 47,504,000 53,057,000  35,873,000 34,862,000 37,536,000   37,446,000 40,047,000    30,833,000          17,848,000 18,127,000 8,631,000  11,975,000 11,200,000 11,051,000    
        total liabilities
      805,480,000 968,999,000 772,198,000 999,322,000 949,590,000 941,546,000 917,429,000 959,699,000 1,035,628,000 1,043,000,000 983,386,000 952,623,000 933,467,000 948,205,000 979,861,000 934,221,000 1,010,356,000  931,442,000 950,556,000 930,202,000  921,502,000 944,715,000 1,107,241,000 944,885,000 1,056,534,000 1,031,485,000 1,024,035,000 1,012,981,000 988,189,000 891,295,000 903,590,000 881,075,000 883,242,000 876,770,000 892,158,000 891,833,000 901,696,000 891,132,000 891,927,000 882,999,000 883,442,000 880,694,000 840,626,000 865,090,000 866,086,000 913,744,000 906,819,000 905,700,000 941,226,000 937,729,000 236,916,000 240,339,000 256,315,000 245,061,000 248,412,000 255,977,000 416,677,000 417,176,000 406,163,000 420,240,000 209,424,000 179,005,000 179,413,000 181,299,000 211,869,000 371,215,000 556,096,000 158,360,000 158,208,000 159,693,000 153,561,000 116,535,000 110,836,000 110,836  
        commitments and contingencies
                                                                                   
        stockholders’ equity
                                                                                   
        preferred stock, 5,000,000 shares authorized:
                                                                                   
        series b preferred stock, 0.25 par value, 153,956 shares issued and outstanding, liquidation preference — 7,889
      39,000                                                                             
        common stock
      169,779,000 169,689,000 169,661,000 167,872,000 160,228,000 160,052,000 159,185,000 156,745,000 156,447,000 156,076,000 154,355,000 153,334,000 152,536,000 151,819,000 150,839,000 137,241,000 136,657,000  136,350,000 136,065,000 135,546,000  134,421,000 133,699,000 132,381,000 132,292,000 124,133,000 123,701,000 122,052,000 121,956,000 121,283,000 101,643,000 101,290,000 100,926,000 100,886,000 100,739,000 99,973,000 99,806,000 99,759,000 97,207,000 96,215,000 95,219,000 95,114,000 94,771,000 93,106,000 92,382,000 92,261,000 87,516,000 85,943,000 85,896,000 85,890,000 85,890,000 71,500,000 71,499,000 71,496,000 71,496,000 71,422,000 71,420,000 70,003,000 69,976,000 69,881,000 64,704,000 64,114,000 63,967,000 60,584,000 59,604,000 59,148,000 40,506,000 31,905,000 30,767,000 30,364,000 30,166,000 30,157,000     
        capital surplus
      2,647,282,000 2,643,211,000 2,638,638,000 2,594,492,000 2,423,631,000 2,418,149,000 2,413,546,000 2,354,004,000 2,350,249,000 2,343,747,000 2,311,266,000 2,289,607,000 2,273,793,000 2,260,290,000 2,241,649,000 2,043,621,000 2,036,417,000  2,032,334,000 2,024,645,000 2,021,072,000  1,998,322,000 1,982,400,000 1,976,033,000 1,973,700,000 1,897,363,000 1,895,617,000 1,882,613,000 1,880,481,000 1,872,946,000 1,628,440,000 1,626,298,000 1,619,816,000 1,617,669,000 1,614,651,000 1,603,324,000 1,597,212,000 1,594,816,000 1,538,148,000 1,528,820,000 1,519,598,000 1,517,514,000 1,515,362,000 1,495,893,000 1,486,750,000 1,484,969,000 1,447,333,000 1,431,903,000 1,426,845,000 1,425,581,000 1,424,198,000 1,219,080,000 1,218,283,000 1,217,461,000 1,216,659,000 1,215,785,000 1,215,229,000 1,181,559,000 1,180,740,000 1,180,195,000 1,179,751,000 1,172,734,000 1,172,006,000 1,124,450,000 1,121,076,000 1,101,598,000 949,614,000 790,757,000 735,569,000 725,076,000 519,767,000 519,292,000 516,327,000 508,104,000 508,104 506,630,000 
        accumulated deficit
      -203,819,000 -182,143,000 -313,902,000 -411,975,000 -467,168,000 -493,529,000 -496,674,000 -489,738,000 -513,608,000 -503,861,000 -456,968,000 -430,606,000 -410,995,000 -403,931,000 -397,096,000 -370,048,000 -353,007,000  -362,023,000 -382,609,000 -377,229,000  -375,527,000 -387,688,000 -371,958,000 -353,331,000 -343,958,000 -323,079,000 -275,188,000 -248,308,000 -223,280,000 -176,158,000 -187,092,000 -195,484,000 -166,602,000 -166,875,000 -141,730,000 -167,437,000 -186,579,000 -211,258,000 -234,272,000 -232,565,000 -168,522,000 -157,547,000 -129,817,000 -141,306,000  -159,748,000 -144,355,000 -154,982,000 -151,079,000 -141,627,000 -115,896,000 -123,288,000 -117,471,000 -115,734,000 -111,688,000 -120,557,000 -133,398,000 -189,179,000 -222,359,000 -265,577,000 -252,432,000 -268,803,000 -282,479,000 -300,915,000 -315,943,000 -314,389,000 -307,224,000 -262,837,000 -274,877,000 -282,970,000 -295,318,000 -319,517,000 -396,092,000 -396,092 -367,832,000 
        accumulated other comprehensive loss
      -5,491,000 -3,334,000 -8,976,000 -4,579,000 -7,832,000            -61,621,000  -35,704,000 -29,437,000 -31,057,000  -40,111,000 -46,261,000 -56,645,000 -37,310,000 -37,958,000 -34,670,000 -38,210,000 -42,469,000 -28,183,000 -31,929,000 -26,767,000 -23,373,000 -20,884,000 -28,520,000 -31,398,000 -34,602,000 -30,942,000 -30,327,000 -31,566,000 -32,631,000 -31,640,000 -31,250,000 -30,095,000 -32,031,000  -27,137,000 -24,949,000 -26,299,000 -27,565,000 -28,694,000 -26,577,000 -23,918,000 -21,219,000 -24,304,000 -23,717,000 -23,498,000 -16,640,000 -15,843,000 -14,761,000 -15,117,000 -14,749,000 -14,932,000 -15,160,000 -14,183,000 -18,296,000           
        less treasury stock, at cost; march 31, 2026 — 8,967,482 and december 31, 2025 — 8,920,348 shares issued and held in treasury
      -36,977,000                                                                             
        total stockholders’ equity
      2,570,813,000 2,591,646,000 2,449,644,000 2,310,033,000 2,073,967,000 2,039,514,000 2,038,282,000 1,980,065,000 1,958,630,000 1,968,104,000 1,977,770,000 1,992,836,000 1,992,157,000 1,978,967,000 1,954,768,000 1,782,882,000 1,728,543,000   1,720,682,000 1,724,875,000   1,658,693,000 1,656,883,000 1,692,423,000  1,639,228,000 1,670,570,000 1,690,963,000   1,494,501,000 1,483,882,000   1,514,303,000 1,479,844,000   1,347,246,000 1,338,926,000   1,419,325,000 1,396,974,000   1,343,462,000 1,326,419,000                            
        total liabilities and stockholders’ equity
      3,376,293,000 3,560,645,000 3,221,842,000 3,309,355,000 3,023,557,000 2,981,060,000 2,955,711,000 2,939,764,000 2,994,258,000 3,011,104,000 2,961,156,000 2,945,459,000 2,925,624,000 2,927,172,000 2,934,629,000 2,717,103,000 2,738,899,000   2,671,238,000 2,655,077,000   2,603,408,000 2,764,124,000 2,637,308,000  2,670,713,000 2,694,605,000 2,703,944,000   2,398,091,000 2,364,957,000   2,406,461,000 2,371,677,000   2,239,173,000 2,221,925,000   2,259,951,000 2,262,064,000   2,250,281,000 2,232,119,000                            
        properties, plants, equipment and mine development
       2,840,827,000    2,694,119,000                                                                        
        current debt
         35,384,000 33,612,000 33,617,000 35,874,000                                                             77,100,000 220,000,000         
        deferred tax liability
       246,425,000    110,266,000  100,732,000 98,011,000 104,835,000 109,293,000 118,611,000 121,081,000 125,846,000 154,225,000 143,213,000 140,810,000  142,750,000 143,181,000 149,220,000     138,282,000    173,537,000    121,546,000                                            
        derivatives liabilities
           2,021,000    364,000    6,066,000 5,774,000 4,228,000 38,992,000  4,179,000 6,757,000 3,906,000                                                         
        series b preferred stock, 0.25 par value, 2025 - 153,956 shares issued and outstanding and 2024 - 157,756 shares, liquidation preference — 7,698
       39,000                                                                            
        less treasury stock, at cost; 2025 — 8,920,348 and 2024 — 8,813,127 shares issued and held in treasury
       -35,816,000                                                                            
        investments
        67,448,000 44,107,000 37,518,000 33,897,000 42,019,000 38,135,000 32,873,000 33,724,000 16,594,000 20,778,000 26,434,000 24,018,000 13,299,000 23,931,000 29,204,000  8,030,000 11,083,000 11,717,000           5,556,000  33,758,000 32,973,000 37,816,000  29,117,000 24,534,000 15,070,000                      1,474,000    1,138,000 2,717,000     9,242,000 9,072,000 7,344,000 2,233,000 2,233 1,657,000 
        series b preferred stock, 0.25 par value, 157,756 shares issued and outstanding, liquidation preference — 7,889
        39,000 39,000 39,000                                                                         
        less treasury stock, at cost; september 30, 2025 — 8,768,372 and december 31, 2024 — 8,813,127 shares issued and held in treasury
        -35,816,000                                                                           
        less treasury stock, at cost; june 30, 2025 — 8,768,372 and december 31, 2024 — 8,813,127 shares issued and held in treasury
         -35,816,000                                                                          
        less treasury stock, at cost; march 31, 2025 — 8,813,127 and december 31, 2024 — 8,813,127 shares issued and held in treasury
          -34,931,000                                                                         
        deferred tax assets
               2,883,000 3,349,000 2,703,000 13,280,000 21,105,000                                                                
        series b preferred stock, 0.25 par value, 2024 - 157,756 shares issued and outstanding and 2023 - 157,776 shares, liquidation preference — 7,889
           39,000                                                                        
        accumulated other comprehensive income
           -10,266,000 -2,883,000 -6,054,000 434,000 5,837,000 2,812,000 14,196,000 8,964,000 2,448,000 -8,965,000 3,727,000                                                    5,418,000 11,528,000 16,944,000 12,063,000 10,666,000 6,652,000 2,703,000 19,746,000 19,746 1,020,000 
        less treasury stock, at cost; 2024 — 8,813,127 and 2023 — 8,535,161 shares issued and held in treasury
           -34,931,000                                                                        
        property, plant and mine development
            2,665,342,000 2,657,995,000                                                                      
        series b preferred stock, 0.25 par value, 157,776 shares issued and outstanding, liquidation preference — 7,889
            39,000 39,000 39,000  39,000 39,000 39,000                                                                 
        less treasury stock, at cost; september 30, 2024 — 8,813,127 and december 31, 2023 — 8,535,161 shares issued and held in treasury
            -34,931,000                                                                       
        less treasury stock, at cost; june 30, 2024 — 8,813,127 and december 31, 2023 — 8,535,161 shares issued and held in treasury
             -34,931,000                                                                      
        properties, plants, equipment and mineral interests
              2,663,155,000 2,666,250,000 2,648,309,000 2,615,747,000 2,587,565,000 2,569,790,000 2,553,974,000 2,295,962,000 2,298,858,000  2,331,018,000 2,305,359,000 2,320,547,000  2,342,038,000 2,354,883,000 2,393,187,000 2,423,698,000 2,455,511,000 2,485,869,000 2,508,981,000 2,520,004,000 2,487,429,000 2,006,592,000 2,008,704,000 2,020,021,000 2,025,607,000 2,033,506,000 2,032,983,000 2,032,685,000 2,023,109,000 1,926,158,000 1,907,775,000 1,896,811,000 1,878,177,000 1,863,440,000  1,831,564,000 1,829,500,000 1,818,632,000  1,791,601,000 1,776,554,000 1,742,696,000  996,659,000 973,586,000 953,365,000 938,879,000 923,212,000 872,860,000 855,482,000 840,264,000 833,288,000 824,130,000 815,331,000 811,661,000 819,518,000 829,073,000 830,719,000 807,724,000  132,308,000       
        less treasury stock, at cost; march 31, 2024 — 8,813,127 and december 31, 2023 — 8,535,161 shares issued and held in treasury
              -34,931,000                                                                     
        series b preferred stock, 0.25 par value, 2023 and 2022 - 157,776 shares issued and outstanding, liquidation preference — 7,889
               39,000                                                                    
        less treasury stock, at cost; 2023 — 8,535,161 and 2022 — 8,132,553 shares issued and held in treasury
               -33,734,000                                                                    
        concentrates, doré, stockpiled ore, and metals in transit and in-process
                33,993,000 34,624,000 28,054,000 37,303,000            30,364,000    53,172,000    28,455,000    25,944,000    22,441,000    25,999,000    27,740,000    15,073,000    13,692,000   7,353,000 8,886,000   13,003,000 12,563,000            
        restricted cash
                1,163,000 1,166,000 1,347,000  1,246,000 1,041,000   1,053,000 1,053,000                                                    3,194,000      
        less treasury stock, at cost; september 30, 2023 — 8,535,161 and december 31, 2022 — 8,132,553 shares issued and held in treasury
                -33,734,000                                                                   
        less treasury stock, at cost; june 30, 2023 — 8,537,067 and december 31, 2022 — 8,132,553 shares issued and held in treasury
                 -33,734,000                                                                  
        less treasury stock, at cost; march 31, 2023 — 8,229,212 and december 31, 2022 — 8,132,553 shares issued and held in treasury
                  -32,180,000                                                                 
        restricted cash and investments
                   1,164,000   1,041,000    1,053,000                                                   15,110,000 16,079,000 21,872,000 20,340,000 20,340 19,789,000 
        pension liability
                        26,229,000 30,237,000 28,797,000                                                         
        series b preferred stock, 0.25 par value, issued 2022 - 157,776 shares (2021 - 157,816 shares issued and outstanding), liquidation preference — 7,891
                   39,000                                                                
        less treasury stock, at cost; 2022 — 8,132,553 and 2021 — 7,395,295 shares issued and held in treasury
                   -31,698,000                                                                
        concentrates, doré, and stockpiled ore
                    40,985,000 30,167,000 29,852,000  17,594,000 43,814,000 56,917,000  50,019,000 46,676,000 39,450,000  63,164,000 45,285,000 44,610,000  42,464,000 35,169,000 37,024,000  38,064,000 25,125,000 30,816,000  23,005,000 28,336,000 29,199,000  20,281,000 29,353,000 22,921,000  20,335,000 29,569,000 22,746,000  23,425,000 18,771,000 19,677,000  11,730,000 9,786,000 11,885,000  14,527,000 11,517,000   11,189,000 15,404,000              
        derivatives assets
                    7,190,000 9,923,000    5,879,000 7,195,000                                                         
        deferred income taxes
                    45,562,000 45,562,000  -48,049,000 5,576,000 5,090,000      3,537,000    1,987,000    1,509,000                                  10,562,000 10,562,000   15,029,000 15,029,000 11,822,000    
        finance and operating leases
                    12,489,000 8,580,000 8,535,000                                                             
        long-term debt
                    530,745,000 507,841,000 508,852,000  507,712,000 508,611,000 507,992,000 507,242,000    504,729,000 584,618,000 586,667,000 533,723,000 532,799,000 534,067,000 533,230,000 533,566,000 502,229,000 501,917,000 501,604,000 501,292,000 500,979,000 500,666,000 500,354,000 500,531,000 500,199,000 501,281,000 501,376,000 498,791,000 498,479,000 498,183,000 496,354,000 491,042,000 490,726,000 490,417,000 490,104,000                65,000,000 75,000,000      3,000,000 3,000  
        series b preferred stock, 25 cent par value, 157,776 shares issued and outstanding, liquidation preference – 7,891
                    39,000                                                               
        less treasury stock, at cost; september 30, 2022 – 8,132,553 shares and december 31, 2021 – 7,395,295 shares issued and held in treasury
                    -31,698,000                                                               
        stockholders' equity
                           1,702,340,000                                                        
        series b preferred stock, 25 cent par value, 157,816 shares issued and outstanding, liquidation preference — 7,891
                     39,000    39,000                                                          
        less treasury stock, at cost; june 30, 2022 — 8,132,553 shares and december 31, 2021 — 7,395,295 shares issued and held in treasury
                     -31,698,000                                                              
        deferred taxes
                      45,562,000                                                             
        series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference — 7,891
                      39,000  39,000  39,000  39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000  39,000  39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000 39,000          39,000       
        less treasury stock, at cost; march 31, 2022 — 7,728,800 shares and december 31, 2021 - 7,395,295 shares issued and held in treasury
                      -29,942,000                                                             
        operating activities:
                                                                                   
        net income
                       35,095,000           -25,533,000  -23,184,000 12,074,000 8,240,000  1,412,000                                           
        non-cash elements included in net income:
                                                                                   
        depreciation, depletion and amortization
                       172,651,000           38,787,000  43,464,000 31,817,000 28,054,000  28,844,000                                           
        fair value adjustments
                       15,040,000                                                            
        adjustment of inventory to net realizable value
                       6,524,000                                                            
        fee on prepayment of debt with shares of common stock
                                                                                   
        loss on disposition of properties, plants, equipment and mineral interests
                       87,000                                                            
        benefit from reclamation and closure costs
                       11,514,000                                                            
        stock compensation
                       6,082,000                                                            
        amortization of loan origination fees
                       1,895,000                                                            
        foreign exchange (gain) loss
                       -79,000                                                            
        other non-cash items
                       681,000                                                            
        changes in assets and liabilities:
                                                                                   
        accounts receivable
                       -5,405,000                                         29,095,000 45,121,000 50,236,000                 
        inventories
                       16,919,000                                                 17,312,000 17,408,000 23,644,000 25,216,000 15,511,000 18,273,000 15,600,000 21,029,000 25,466,000 25,466 20,250,000 
        other current and non-current assets
                       -1,678,000                                                            
        accrued reclamation and closure costs and other non-current liabilities
                       2,128,000                                                            
        net cash from operating activities
                       220,337,000                                                            
        investing activities:
                                                                                   
        additions to properties, plants, equipment and mineral interests
                       -109,048,000                                                            
        purchase of carbon credits
                       -869,000                                                            
        proceeds from sale or exchange of investments
                       1,811,000                                                            
        proceeds from disposition of properties, plants, equipment and mineral interests
                       1,077,000                                                            
        purchases of investments
                                                                                   
        net cash from investing activities
                       -107,029,000                                                            
        financing activities:
                                                                                   
        proceeds from issuance of common stock, net of offering costs
                                                                                   
        dividends paid to common and preferred stockholders
                       -20,672,000                                                            
        debt issuance and credit facility fees paid
                       -116,000                                                            
        acquisition of treasury shares from employee equity awards
                       -4,525,000                                                            
        borrowings of debt
                                                                                   
        repayments of debt
                                                                                   
        repayments of finance leases
                       -7,285,000                                                            
        derivative assets
                        5,220,000                                                           
        other non-current assets and deferred charges
                        3,511,000    4,205,000 4,028,000 4,507,000  9,353,000 10,172,000   14,699,000 24,007,000   6,384,000 3,437,000   2,573,000 3,638,000 2,783,000  3,034,000 3,576,000 10,692,000  3,440,000 3,577,000 9,269,000  12,880,000 17,445,000 14,944,000  2,855,000 7,734,000 11,496,000  24,022,000 3,654,000   6,282,000 7,370,000   5,201,000           
        operating leases
                        2,385,000 2,540,000 2,832,000                                                         
        shareholders’ equity
                                                                                   
        less treasury stock, at cost; september 30, 2021 — 7,395,295 and december 31, 2020 — 6,821,044 shares issued and held in treasury
                        -28,021,000                                                           
        total shareholders’ equity
                        1,742,975,000    1,693,648,000    1,616,644,000    1,722,069,000 1,501,299,000   1,512,941,000 1,502,386,000   1,461,983,000 1,379,678,000   1,401,771,000 1,411,574,000   1,386,367,000 1,341,383,000   1,327,786,000 1,334,726,000 1,143,196,000 1,137,951,000 1,147,288,000 1,145,433,000 1,149,321,000 1,140,113,000 1,099,043,000 1,043,213,000 1,010,926,000 962,253,000 968,159,000 950,730,000 887,298,000 865,485,000 826,410,000 681,052,000 526,869,000 520,346,000 492,529,000 277,028,000 260,182,000 229,184,000 161,330,000 161,330  
        total liabilities and shareholders’ equity
                        2,674,417,000    2,615,150,000    2,673,178,000    2,710,258,000 2,392,594,000   2,396,183,000 2,379,156,000   2,363,679,000 2,270,810,000   2,285,213,000 2,292,268,000   2,252,453,000 2,255,127,000   2,269,012,000 2,272,455,000 1,380,112,000 1,378,290,000 1,403,603,000 1,390,494,000 1,397,733,000 1,396,090,000 1,515,720,000 1,460,389,000 1,417,089,000 1,382,493,000 1,177,583,000 1,129,735,000 1,066,711,000 1,046,784,000 1,038,279,000 1,052,267,000 1,082,965,000 678,706,000 650,737,000 436,721,000 413,743,000 345,719,000 272,166,000 272,166  
        less treasury stock, at cost; june 30, 2021 — 7,395,295 shares and december 31, 2020 — 6,821,044 shares issued and held in treasury
                         -28,021,000                                                          
        deferred taxes
                          3,886,000                                                         
        less treasury stock, at cost; march 31, 2021 and december 31, 2020 - 6,821,044 shares issued and held in treasury
                          -23,496,000                                                         
        properties, plants, equipment and mineral interests - net
                           1,913,000                                                        
        intercompany receivable
                           -82,559,000                                                        
        investments in subsidiaries
                           1,739,689,000                                                        
        liabilities and stockholders' equity
                                                                                   
        current liabilities
                           -191,865,000                                                        
        non-current portion of accrued reclamation
                                                                                   
        non-current deferred tax liability
                            129,506,000 128,677,000 126,237,000  143,442,000 148,338,000 159,425,000  164,928,000 112,462,000 116,866,000  122,723,000 121,260,000 121,025,000 121,600,000 124,385,000 127,413,000 126,009,000 119,623,000 125,753,000 137,716,000 138,422,000 153,300,000 156,712,000 165,442,000 159,890,000 164,861,000 171,260,000 169,030,000                          
        total liabilities and stockholders' equity
                           2,058,464,000                                                        
        taxes
                            6,343,000 11,847,000 12,547,000 20,048,000 22,902,000 25,326,000 16,831,000 14,191,000 19,316,000 10,382,000 10,382,000 10,382,000 10,382,000 10,981,000  187,000 8,211,000 12,142,000 14,648,000 11,458,000 14,219,000 10,299,000 10,303,000 10,392,000    16,204,000                            
        prepaid taxes
                            107,000 5,148,000 5,114,000 107,000 100,000 288,000 13,818,000 12,231,000                                                
        non-current restricted cash and investments
                            1,053,000 1,053,000 1,053,000 1,025,000 1,025,000 1,025,000 1,025,000 1,025,000 1,010,000 1,005,000  1,032,000 1,076,000 1,098,000 2,200,000 2,200,000 2,184,000 999,000 999,000 999,000 999,000 957,000 883,000 883,000 883,000 883,000 7,702,000 5,217,000 5,378,000 5,287,000 883,000 871,000 866,000 866,000 866,000 866,000 926,000 926,000 10,309,000 10,314,000 10,297,000 9,468,000 10,946,000 10,945,000 10,945,000 14,005,000 36,741,000 15,326,000 15,181,000       
        non-current deferred income taxes
                            3,408,000 3,181,000 3,007,000  3,701,000 3,395,000 3,058,000  1,601,000 1,179,000 671,000  44,683,000 44,628,000 48,410,000 23,522,000 19,456,000 24,427,000 34,981,000 36,589,000 93,037,000 105,739,000 98,544,000 98,923,000 93,169,000 77,689,000 86,677,000 78,780,000 75,950,000 99,144,000 88,729,000 86,365,000 86,324,000 86,362,000 89,478,000 88,028,000 71,795,000 73,851,000 84,834,000 100,072,000 35,304,000 38,250,000 43,626,000 38,476,000 35,702,000 36,466,000 36,466,000 18,201,000 14,938,000       
        current portion of finance leases
                            6,187,000 5,745,000 5,391,000 5,429,000 5,704,000 5,392,000 5,858,000                                                 
        current portion of operating leases
                            3,590,000 4,162,000 4,792,000 5,580,000 5,864,000 6,628,000 6,701,000                                                 
        current portion of accrued reclamation and closure costs
                            5,892,000 5,109,000 5,277,000 4,581,000 7,457,000 6,824,000 5,325,000 3,410,000 6,621,000 8,315,000 8,315,000 6,679,000 6,514,000 8,532,000 7,453,000 5,653,000 17,866,000 24,127,000 20,989,000 20,989,000 20,788,000 21,191,000 1,631,000 1,631,000 2,236,000 58,190,000 58,640,000 58,425,000 74,481,000 19,845,000 19,845,000 19,845,000 34,146,000 39,694,000 40,230,000 42,248,000 178,415,000 175,597,000 175,349,000 175,484,000 7,392,000 5,815,000 11,098,000 5,773,000 4,941,000 7,904,000 8,931,000 8,931,000 9,686,000 10,935,000 9,349,000 7,269,000 6,328,000 6,328 9,237,000 
        current derivatives liabilities
                            12,232,000 13,779,000                                                      
        non-current finance leases
                            7,883,000 7,057,000 5,810,000 7,214,000 8,569,000 8,013,000 9,302,000                                                 
        non-current operating leases
                            8,355,000 9,079,000 10,139,000 10,818,000 11,466,000 12,410,000 13,964,000                                                 
        long-term debt - notes
                            495,839,000                                                       
        non-current pension liability
                            48,303,000 58,848,000 57,309,000 56,219,000 50,662,000 48,448,000 49,821,000 47,711,000 44,097,000 48,973,000 48,459,000 46,628,000 43,451,000 47,211,000 46,443,000 44,491,000 43,742,000 47,880,000 45,874,000 46,513,000                                    
        less treasury stock, at cost; september 30, 2020 — 6,821,044 and december 31, 2019 — 6,287,271 shares issued and held in treasury
                            -23,496,000                                                       
        long-term debt - senior notes
                             468,252,000 469,021,000                                                     
        long-term debt - revolving credit facility
                             50,000,000 210,000,000                                                     
        non-current derivatives liabilities
                             5,282,000                                                      
        less treasury stock, at cost; june 30, 2020 — 6,821,044 shares and december 31, 2019 — 6,287,271 shares issued and held in treasury
                             -23,496,000                                                      
        less treasury stock, at cost; march 31, 2020 and december 31, 2019 - 6,287,271 shares issued and held in treasury
                              -22,967,000                                                     
        less treasury stock, at cost; 2019 — 6,287,271 and 2018 — 5,226,791 shares issued and held in treasury
                               -22,967,000 -22,975,000                                                   
        deferred revenue
                                20,084,000                                                   
        less treasury stock, at cost; 2019 — 5,941,436 shares and 2018 — 5,226,791 shares issued and held in treasury
                                 -22,380,000                                                  
        less treasury stock, at cost; march 31, 2019 and december 31, 2018 - 5,226,791 shares issued and held in treasury
                                  -20,736,000                                                 
        sales of products
                                  152,617,000  143,649,000 147,259,000 139,709,000  140,839,000                                           
        cost of sales and other direct production costs
                                  110,386,000  93,609,000 80,440,000 72,869,000  68,358,000                                           
        total cost of sales
                                  149,173,000  137,073,000 112,257,000 100,923,000  97,202,000                                           
        gross profit
                                  3,444,000  6,576,000 35,002,000 38,786,000  43,637,000                                           
        other operating expenses:
                                                                                   
        general and administrative
                                  9,959,000  10,327,000 9,787,000 7,735,000  9,529,000                                           
        exploration
                                  4,402,000  12,411,000 7,838,000 7,360,000  7,255,000                                           
        pre-development
                                  856,000  1,195,000 1,415,000 1,005,000  1,757,000                                           
        research and development
                                  403,000  1,269,000 2,337,000 1,436,000  1,130,000                                           
        other operating expense
                                  587,000  448,000 638,000 515,000  134,000                                           
        suspension-related costs
                                  2,778,000  6,519,000                                               
        acquisition costs
                                  13,000  6,139,000 1,010,000 2,507,000                                             
        benefit from closed operations and environmental matters
                                  570,000   1,420,000 1,262,000                                             
        total other operating expense
                                  19,568,000  36,952,000  26,837,000  22,695,000                                           
        income from operations
                                  -16,124,000  -30,376,000 3,756,000 11,949,000  20,942,000                                           
        other income:
                                                                                   
        unrealized gain on investments
                                  96,000  -2,207,000 -564,000 310,000  -124,000                                           
        gain on derivative contracts
                                  -1,799,000  19,460,000 16,804,000 4,007,000  -11,226,000                                           
        net foreign exchange gain
                                  -3,133,000   2,476,000 2,592,000                                             
        other income
                                  -1,124,000    -56,000                                             
        interest expense
                                  -10,665,000                                                 
        total other income
                                  -16,625,000  4,513,000 8,745,000 -2,941,000  -24,931,000                                           
        income before income taxes
                                  -32,749,000  -25,863,000 12,501,000 9,008,000  -3,989,000                                           
        income tax benefit
                                  7,216,000  2,679,000 -427,000 -768,000  5,401,000                                           
        preferred stock dividends
                                  -138,000  -138,000 -138,000 -138,000  -138,000                                           
        income applicable to common stockholders
                                  -25,671,000    8,102,000                                             
        comprehensive income:
                                                                                   
        unrealized holding losses on investments
                                      -31,000                                             
        change in fair value of derivative contracts designated as hedge transactions
                                  4,259,000  3,743,000 -5,203,000 -2,073,000  6,760,000                                           
        comprehensive income
                                  -21,274,000  -19,438,000 6,912,000 6,136,000  9,048,000                                           
        basic income per common share after preferred dividends
                                  -50  -50 30 20                                             
        diluted income per common share after preferred dividends
                                  -50  -50 30 20                                             
        weighted-average number of common shares outstanding - basic
                                  482,829,000  452,636,000 400,619,000 399,322,000  398,848,000                                           
        weighted-average number of common shares outstanding - diluted
                                  482,829,000  452,636,000 403,610,000 401,923,000  401,258,000                                           
        current portion of capital leases
                                   5,264,000 6,069,000 6,015,000 5,669,000 5,608,000 5,852,000 5,885,000 5,647,000 5,653,000 7,175,000 7,761,000 8,216,000 8,735,000 9,492,000 9,894,000 10,289,000 9,491,000 8,470,000 8,410,000 8,482,000 8,471,000 7,398,000 7,128,000 7,294,000 5,564,000 4,654,000 4,552,000 4,797,000 4,005,000 3,514,000 3,045,000 2,714,000 2,481,000 2,220,000 1,760,000 1,595,000             
        long-term capital leases
                                   7,871,000    6,193,000    5,838,000    8,841,000    13,650,000    14,332,000    11,935,000    6,265,000   4,004,000 3,792,000                
        less treasury stock, at cost; 2018 — 5,226,791 and 2017 — 4,529,450 shares issued and held in treasury
                                   -20,736,000 -20,736,000                                               
        capital leases
                                    8,638,000 8,757,000 7,094,000  7,436,000 7,213,000 6,088,000  6,532,000 7,316,000 7,427,000  9,485,000 10,187,000 11,590,000  10,890,000 12,061,000 14,112,000  12,603,000 13,671,000 15,389,000  10,163,000 9,054,000 8,826,000  4,070,000 4,473,000   3,677,000 2,899,000 2,871,000             
        other noncurrent liabilities
                                    4,689,000    11,160,000    7,626,000    50,485,000    42,466,000    39,180,000 41,407,000   33,905,000 32,450,000 30,476,000  15,990,000 16,149,000 15,218,000 16,598,000 13,548,000 11,390,000 10,972,000 10,855,000 13,471,000    9,618,000    8,791,000 8,791 7,107,000 
        gain on disposition of properties, plants, equipment and mineral interests
                                    -3,208,000    -4,830,000                                           
        benefit from closed operations and reclamation
                                    1,852,000    2,940,000                                           
        loss on disposition of investments
                                    -36,000                                               
        foreign exchange gain
                                    -2,212,000    -4,764,000                                           
        interest income and other income
                                    -346,000                                               
        interest expense, net of amount capitalized
                                    -10,146,000 -10,079,000   -9,358,000                                           
        income applicable to common shareholders
                                    -23,322,000 11,936,000   1,274,000                                           
        reclassification of loss on disposition or impairment of marketable securities included in net income
                                                                                   
        unrealized loss and amortization of prior service on pension plans
                                        -16,000                                           
        unrealized holding gains on investments
                                    3,000 41,000   892,000                                           
        cash dividends declared per common share
                                    2.5 2.5   2.5                                           
        less treasury stock, at cost; 2018 — 5,226,791 shares and 2017 — 4,529,450 shares issued and held in treasury
                                     -20,736,000                                              
        lucky friday suspension-related costs
                                     6,801,000 5,017,000  4,780,000                                           
        total other operating expenses
                                     31,246,000                                              
        interest income and other income and expense
                                     108,000                                              
        short-term investments
                                      34,358,000    36,505,000                                        28,178,000 
        non-current restricted cash and cash equivalents
                                      1,005,000                                             
        less treasury stock, at cost; march 31, 2018 - 4,864,799 and december 31, 2017 - 4,529,450 shares issued and held in treasury
                                      -19,267,000                                             
        loss on disposal of investments
                                                                                   
        interest expense, net of amounts capitalized
                                      -9,794,000                                             
        reclassification of disposal and impairment of investments included in net income
                                                                                   
        unrealized gain and amortization of prior service on pension plans
                                                                                   
        current portion of debt
                                           470,000 1,384,000 1,852,000 2,057,000 2,721,000 1,981,000 1,789,000                                  
        less treasury stock, at cost; 2017 — 4,529,450 and 2016 — 3,941,210 shares issued and held in treasury
                                       -18,042,000 -18,167,000                                           
        interest and other income
                                        541,000                                           
        less treasury stock, at cost; 2017 — 4,429,844 shares and 2016 — 3,941,210 shares issued and held in treasury
                                         -17,648,000                                          
        less treasury stock, at cost; 2017 - 4,085,599 and 2016 - 3,941,210 shares issued and held in treasury
                                          -15,905,000                                         
        current deferred income taxes
                                           12,293,000 8,238,000 18,386,000 15,268,000 17,980,000 19,573,000 8,766,000 10,064,000 12,029,000 20,352,000 37,898,000 30,946,000 35,734,000 36,141,000 16,485,000 23,043,000 29,398,000 31,537,000 25,779,000 23,534,000 27,810,000 54,774,000 75,435,000 79,391,000 87,287,000 8,279,000 7,134,000 8,137,000 7,176,000 2,850,000   8,980,000 7,370,000       
        reclamation insurance
                                              13,695,000 13,695,000                                    
        less treasury stock, at cost; 2016 — 3,941,210 and 2015 — 2,764,973 shares issued and held in treasury
                                           -15,174,000                                        
        current restricted cash
                                            3,900,000 3,900,000 3,900,000                           2,075,000 2,059,000 2,059,000        
        reclamation insurance asset
                                                16,800,000 16,800,000                                  
        less treasury stock, at cost; 2016 — 3,930,122 and 2015 — 2,764,973 shares issued and held in treasury
                                            -15,110,000                                       
        less treasury stock, at cost; 2016 — 3,733,742 shares and 2015 — 2,435,518 shares issued and held in treasury
                                             -14,131,000                                      
        less treasury stock, at cost; 2016 - 3,037,154 and 2015 - 2,764,973 shares issued and held in treasury
                                              -11,990,000                                     
        less treasury stock, at cost; 2015 — 2,764,973 and 2014 — 2,151,482 shares issued and held in treasury
                                               -10,734,000 -10,734,000                                   
        less treasury stock, at cost; 2015 — 2,435,518 shares and 2014 — 2,151,482 shares issued and held in treasury
                                                 -9,801,000                                  
        properties, plant, equipment and mineral interests
                                                  1,837,173,000    1,805,632,000    1,007,896,000                         
        less treasury stock, at cost; 2015 - 2,433,518 and 2014 - 2,151,482
                                                  -9,801,000                                 
        less treasury stock, at cost; 2014 — 2,151,482 and 2013 — 921,721 shares issued and held in treasury
                                                   -8,860,000                                
        less treasury stock, at cost; 2014 — 1,466,611 shares and 2013 — 921,721 shares issued and held in treasury
                                                     -6,620,000                              
        less treasury stock, at cost; 2014 - 932,811 and 2013 - 921,721
                                                      -5,119,000                             
        preferred stock, 5,000,000 shares authorized: series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference — 7,891
                                                       39,000  39,000                          
        less treasury stock, at cost; 2013 — 921,721 and 2012 — 788,288 shares issued and held in treasury
                                                       -5,080,000 -5,080,000                           
        less treasury stock, at cost; 2013 — 921,721 shares and 2012 — 788,288 shares
                                                         -5,080,000                          
        less treasury stock, at cost; 2013 - 838,288 and 2012 - 788,288
                                                          -4,950,000                         
        less treasury stock, at cost; 2012 — 788,288 shares and 2011 — 392,645 shares
                                                           -4,664,000                        
        less treasury stock, at cost; 2012 — 497,988 shares and 2011 — 392,645 shares
                                                            -3,018,000                       
        less treasury stock, at cost; 2012 — 437,986 shares and 2011 — 392,645 shares
                                                             -2,723,000                      
        less treasury stock, at cost; 392,645 shares
                                                              -2,520,000                     
        current derivative contract liabilities
                                                                 10,510,000 14,528,000 20,016,000                
        6.5% mandatory convertible preferred stock, 0.25 par value, shares issued and outstanding, 2011 — 0 and 2010 — 2,012,500, liquidation preference 2011 — 0 and 2010 — 201,250
                                                                                   
        less treasury stock, at cost; 2011 — 392,645 shares and 2010 — 335,957 shares
                                                               -2,520,000                    
        6.5% mandatory convertible preferred stock, 0.25 par value, shares issued and outstanding 2011 — 0 and 2010 — 2,012,500, liquidation preference 2011 — 0 and 2010 — 201,250
                                                                                   
        less treasury stock, at cost; 2011 – 392,645 and 2010 – 335,957 shares
                                                                -2,520,000 -2,520,000                  
        6.5% mandatory convertible preferred stock, 0.25 par value, issued and outstanding 2011 – 0 and 2010 – 2,012,500, liquidation preference 2011 — 0 and 2010 — 201,250
                                                                                   
        less treasury stock, at cost; 2011 — 337,670 shares and 2010 — 335,957 shares
                                                                  -2,069,000                 
        series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference 2010 — 7,891 and 2009 — 8,581
                                                                   39,000 39,000 39,000 39,000             
        6.5% mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference 2010 — 201,250 and 2009 — 217,600
                                                                   504,000                
        less treasury stock, at cost; 2010 — 335,957 shares and 2009 — 81,375 shares
                                                                   -2,051,000                
        derivative contract liabilities
                                                                    11,268,000               
        mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference 2010 — 201,250 and 2009 — 217,600
                                                                    504,000 504,000 504,000             
        treasury stock
                                                                    -2,051,000    -640,000           
        shareholders' equity
                                                                                   
        less treasury stock, at cost; 2010 – 335,957 and 2009 – 81,375 shares
                                                                     -2,051,000              
        less treasury stock, at cost; 81,375 common shares
                                                                      -640,000 -640,000  -640,000 -640,000 -640,000        
        short-term debt
                                                                        38,337,000           
        current portion of long-term debt and capital leases
                                                                       1,560,000 1,569,000           
        long-term debt and capital leases
                                                                       3,281,000 3,675,000           
        series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference 2009 — 8,581 and 2008 — 8,029
                                                                       39,000            
        mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference 2009 — 217,600 and 2008 — 204,520
                                                                       504,000            
        series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference 2009 — 8,443 and 2008 — 8,029
                                                                        39,000           
        mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference 2009 — 214,330 and 2008 — 204,520
                                                                        504,000           
        short-term investments and securities held for sale
                                                                         2,428,000  27,085,000 25,759,000 73,866,000 83,713,000 25,805,000 40,862,000 40,862  
        accounts and notes receivable
                                                                                   
        current portion of long-term debt
                                                                         56,667,000 65,000,000         
        preferred stock, 0.25 par value, authorized 5,000,000 shares; 157,816 shares issued, liquidation preference - 7,891
                                                                         39,000 39,000   39,000 39,000     
        mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference - 201,250
                                                                         504,000 504,000 504,000        
        assets of operations held for sale
                                                                          43,888,000         
        liabilities of operations held for sale
                                                                          17,202,000         
        properties, plants, equipment, and mineral interests
                                                                           147,734,000    118,953,000    
        deposits on acquisition properties
                                                                           16,340,000        
        series b preferred stock, 0.25 par value, 157,816 shares issued and outstanding, liquidation preference – 7,891
                                                                           39,000        
        other noncurrent assets
                                                                            30,297,000    17,884,000 17,884 14,906,000 
        mandatory convertible preferred stock, 0.25 par value, 2,012,500 shares issued and outstanding, liquidation preference - 201,722
                                                                            504,000       
        less treasury stock, at cost; 2007 — 81,375 common shares; 2006 — 57,333 common shares
                                                                            -640,000       
        properties, plants and equipment
                                                                             125,602,000 118,126,000  137,932,000 137,932 114,515,000 
        less treasury stock, at cost; 2007 – 81,375 common shares, and 2006 – 57,333 common shares
                                                                             -640,000 -640,000     
        preferred stock, 0.25 par value, authorized 5,000,000 shares;
                                                                                   
        157,816 shares issued and outstanding, liquidation preference – 7,891
                                                                               39,000    
        issued 2007 – 120,252,142 shares and
                                                                                   
        issued 2006 – 119,828,707 shares
                                                                               30,063,000    
        less treasury stock, at cost; 57,333 common shares
                                                                               -431,000    
        dividends payable
                                                                                138,000 138  
        157,816 shares issued, liquidation preference 2005 - 7,891, 2004 - 10,238
                                                                                39,000 39  
        issued 2005 - 118,602,135 shares and issued 2004 - 118,350,861 shares
                                                                                29,651,000 29,651  
        less treasury stock, at cost; 8,274 common shares
                                                                                -118,000 -118 -118,000 
                                                                                   
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 
                                                                             
          operating activities:
                                                                             
          net income
        -19,028,000 134,409,000 100,726,000 57,705,000 28,872,000 11,924,000 1,761,000 27,870,000 -5,753,000   -3,173,000 -4,452,000 -23,526,000 -13,523,000 4,153,000 11,875,000 3,464,000 785,000 18,971,000    -17,185,000   -46,532,000 -25,533,000 -23,693,000 -23,184,000 12,074,000 8,240,000 -27,749,000 1,412,000 -24,016,000 26,834,000 20,262,000 25,787,000 24,116,000 -618,000 -62,963,000 -9,890,000 -26,667,000 12,552,000 16,905,000 3,677,000 -14,399,000 11,641,000 -8,458,000 -24,858,000 11,094,000 743,000 -885,000 2,524,000 12,572,000 55,921,000 33,317,000 43,357,000 19,791,000 17,084,000 21,844,000 32,069,000 -3,756,000 -40,979,000 15,482,000 8,232,000 12,485,000 24,337,000 8,143,000 
          less: net income from discontinued operations, net of taxes
        -183,681,000                                                                     
          income from continuing operations
        164,653,000                                                              -3,766,000       
          non-cash elements included in net income:
                                                                             
          depreciation, depletion and amortization
        34,468,000 39,107,000 49,377,000 37,914,000 39,172,000 41,206,000 44,118,000 53,921,000 51,226,000 37,095,000 34,718,000 39,892,000 38,404,000 33,087,000 38,200,000 35,456,000 32,851,000 41,679,000 48,575,000 49,546,000 37,115,000 42,726,000 42,555,000 41,630,000 61,435,000 52,219,000 50,554,000 40,267,000 32,091,000 45,962,000 33,362,000 29,490,000 34,296,000 30,726,000 27,318,000 29,590,000 33,513,000 26,932,000 30,815,000 26,153,000 31,110,000 28,509,000 27,443,000 25,523,000 31,057,000 27,071,000 27,991,000 26,054,000 20,445,000 20,123,000 14,711,000 14,071,000 13,243,000 11,530,000 11,269,000 11,172,000 11,270,000 12,327,000 15,013,000 15,070,000 16,107,000 15,737,000 10,539,000 6,981,000 6,059,000 5,632,000 5,978,000 7,553,000 8,016,000 
          inventory adjustments
         10,591,000 51,000 812,000 1,558,000 1,633,000 178,000 2,225,000 7,671,000                                                             
          fair value adjustments
        5,945,000 18,412,000 -17,625,000 -9,615,000 -3,627,000 9,008,000 -3,654,000 -5,002,000 1,852,000 6,397,000 2,558,000 -3,181,000 20,696,000 17,671,000 -11,940,000 -2,245,000                                                      
          provision for reclamation and closure costs
        1,871,000 5,834,000 1,986,000 1,907,000 1,908,000  1,822,000   2,477,000 3,634,000 1,694,000      1,638,000 1,654,000 4,529,000 1,551,000 1,545,000      1,594,000    1,323,000 1,129,000                                     
          stock-based compensation
        2,784,000 3,356,000 2,639,000 2,987,000 1,936,000 2,258,000 2,255,000 2,982,000 1,164,000 2,434,000 1,498,000 1,190,000                                                          
          deferred income taxes
        27,878,000 46,456,000 44,502,000 26,288,000 13,221,000 5,427,000 8,573,000 6,104,000 -416,000 -3,790,000 4,027,000 558,000 -7,718,000 -16,538,000   -30,163,000 -9,324,000   885,000 -1,225,000 -1,913,000 -3,252,000 -6,771,000 -4,031,000 -14,292,000 -8,293,000 -5,062,000 -1,660,000 -2,539,000 -438,000 42,588,000 -2,167,000 -879,000 -21,234,000 -8,218,000 -322,000 7,332,000 3,320,000 56,759,000 -1,076,000 -1,260,000 555,000 7,754,000 981,000 -3,989,000 -2,851,000 306,000 -5,600,000 3,990,000   871,000 2,826,000 22,471,000 15,184,000 23,135,000 1,802,000 6,612,000 -6,344,000  3,153,000 -4,873,000     
          net foreign exchange loss
        -498,000  -305,000 3,517,000 356,000                                                                 
          other non-cash items
        1,759,000 9,069,000 4,524,000 -2,051,000 507,000 1,561,000 341,000 -715,000 519,000 50,000 1,388,000 186,000 1,282,000 1,472,000 499,000 483,000 920,000 -392,000 145,000 8,000       1,000 2,000 5,000 -2,000 1,000 -36,000 52,000    -179,000    -80,000    56,000                         
          change in assets and liabilities:
                                                                             
          accounts receivable
        -42,968,000 -65,408,000 -60,988,000 18,875,000 -29,314,000 7,040,000 -7,085,000 750,000 -17,864,000 -3,544,000 13,087,000 15,477,000 -26,119,000 15,589,000 16,420,000 2,779,000 -1,607,000 5,634,000 -6,768,000 -2,664,000 2,661,000 2,309,000 -16,005,000 9,955,000 -724,000 2,557,000 -7,709,000 -5,063,000 14,267,000 -6,895,000 9,737,000 -7,266,000 -7,317,000 6,053,000 7,588,000 -8,738,000 -1,543,000 21,686,000 4,126,000 -20,036,000 -3,883,000 -5,420,000 10,679,000 -8,210,000 -7,861,000 2,554,000 7,011,000 1,387,000 -23,828,000 4,409,000 4,708,000   -24,852,000 8,014,000 16,027,000 5,113,000 -13,395,000 -26,408,000 16,264,000 -12,241,000 14,679,000        
          inventories
        483,000 -12,421,000 11,773,000 -9,058,000 -11,763,000 -5,460,000 3,498,000 -12,127,000 -18,746,000 -6,218,000 -8,882,000 -9,239,000 1,242,000 -11,120,000 -3,271,000 -5,081,000 -5,453,000 16,653,000 3,599,000 2,120,000 -118,000 -8,510,000 2,022,000 -6,602,000 22,647,000 -6,354,000 -3,318,000 3,171,000 -8,558,000 -12,089,000 -103,000 -6,762,000 5,867,000 -11,205,000 4,952,000 -3,358,000 -5,653,000 5,758,000 120,000 -5,922,000 -5,236,000 7,799,000 -7,366,000 3,949,000 -6,006,000 9,543,000 -7,087,000 4,669,000 -5,524,000 8,709,000 -5,108,000 -3,467,000 -1,988,000 1,065,000 1,948,000  -4,166,000 1,310,000 3,719,000 -2,344,000 -863,000 -4,154,000 6,236,000 9,203,000 -9,705,000 2,761,000 -3,152,000 4,788,000 1,048,000 
          other current and non-current assets
        -19,085,000 9,222,000 9,002,000 3,113,000 9,578,000 -12,870,000 -7,989,000 3,104,000 5,238,000 18,000 -5,207,000 -9,856,000 -8,968,000 -2,526,000 -2,590,000 1,696,000 -3,328,000 -2,475,000 2,597,000 1,528,000 -4,367,000 7,672,000 1,718,000 -2,642,000 705,000 -1,871,000 15,660,000 1,124,000 3,843,000 -3,062,000 664,000 -3,171,000 -8,910,000 -6,581,000 2,533,000 1,363,000 14,961,000 -807,000 887,000 -619,000 7,974,000 -2,875,000 -2,266,000 -1,638,000 517,000 -2,714,000 694,000 923,000 -5,047,000 3,872,000 382,000   1,207,000 549,000 -2,179,000   -1,491,000    -1,979,000 719,000 -1,291,000  292,000 2,877,000 393,000 
          accounts payable, accrued and other current liabilities
        -777,000 3,571,000 -8,155,000 19,736,000 -15,917,000 4,165,000 -4,690,000 6,518,000 -8,819,000 -2,532,000 9,447,000 -9,304,000                                                          
          accrued payroll and related benefits
        -15,317,000 11,171,000 3,378,000 7,991,000 -168,000 147,000 2,772,000 -1,678,000 5,498,000 -1,701,000 -14,248,000 4,705,000 12,053,000 1,401,000 -6,631,000 6,909,000 3,099,000 3,522,000 2,644,000 -7,995,000 3,128,000 5,899,000 -4,077,000 9,495,000 4,720,000 2,846,000 -5,552,000 7,212,000 1,782,000 -3,870,000 3,590,000 -3,927,000 3,005,000 3,988,000 -11,782,000 6,881,000 9,084,000 5,486,000 5,961,000 -2,826,000 5,104,000 1,418,000 5,919,000 -5,116,000 6,217,000 1,136,000 6,348,000 2,721,000 1,296,000 -6,623,000 5,046,000   174,000 -3,870,000 1,026,000 743,000 -1,188,000 2,125,000 -805,000 -6,527,000 2,763,000 346,000 -1,709,000 2,122,000 3,235,000 -965,000 893,000 -1,831,000 
          accrued taxes
        21,503,000 5,348,000 9,624,000 -763,000 2,769,000 1,748,000 2,085,000 -3,101,000 2,085,000 -923,000 -2,311,000 2,226,000 -5,275,000 3,031,000 -9,437,000 3,754,000 3,727,000 3,729,000 -3,030,000 2,031,000 285,000 -636,000 2,580,000 1,332,000 2,578,000 719,000 -7,689,000 1,237,000 -200,000 1,517,000 -890,000 218,000 2,235,000 -8,877,000 2,654,000 1,754,000 3,157,000 1,697,000 -4,554,000 -37,000 1,871,000 4,720,000 -1,675,000 -263,000 -2,071,000 -4,123,000 -2,174,000 4,756,000 -2,940,000 -5,021,000 -2,497,000   -9,508,000 2,890,000  -5,031,000 -1,333,000 5,623,000 -2,198,000 942,000 2,066,000 -512,000 -1,295,000 1,067,000 881,000 -982,000 -2,607,000 734,000 
          accrued reclamation and closure costs and other non-current liabilities
        223,000 -3,858,000 -2,460,000 2,438,000 -3,350,000 -226,000 -6,686,000 -1,220,000 -4,439,000 -1,686,000 -9,260,000 7,125,000 12,121,000 -3,821,000 7,040,000 -3,516,000 -361,000 1,793,000 501,000 195,000 -5,568,000 2,918,000 2,768,000 -3,203,000 1,711,000 1,473,000 3,284,000 1,064,000 -1,961,000 -828,000 -522,000 -3,888,000 673,000 -4,517,000 2,452,000 -3,811,000 -472,000 -2,332,000 2,993,000 -2,058,000 416,000 -1,465,000 10,142,000 -743,000 2,247,000 -48,872,000 1,540,000 -2,762,000 8,001,000 -4,414,000 -22,000   57,000 -3,659,000 1,278,000 200,000 -1,378,000     -3,858,000 -1,231,000 -846,000  -1,129,000 -868,000 -332,000 
          cash from operating activities of continuing operations
        182,922,000                                                                     
          cash from operating activities of discontinued operations
        11,324,000                                                                     
          net cash from operating activities
        194,246,000 217,055,000 148,049,000 161,796,000 35,738,000 67,470,000                                                    60,910,000   19,313,000    11,636,000 18,006,000 22,606,000 8,018,000 16,365,000 
          capital expenditures
        -39,265,000 -58,043,000 -54,095,000                                                         
          free cash flows
        154,981,000 217,055,000 148,049,000 103,753,000 -18,357,000 67,470,000                                                    60,910,000   19,313,000    11,636,000 18,006,000 22,606,000 8,018,000 16,365,000 
          investing activities:
                                                                             
          additions to property, plants, equipment and mine development
        -39,265,000                                                                     
          proceeds from sale of hecla quebec, net of transaction costs
        168,045,000                                                                     
          proceeds from sale of minera hecla
        5,228,000                                                                     
          proceeds from sales of investments
        95,378,000                                                                     
          purchases of investments
        -55,684,000          -1,431,000 -8,641,000 -11,031,000 -10,868,000     -555,000 -1,024,000   -282,000   -289,000 -500,000 -31,182,000 -19,697,000 -13,636,000 -12,167,000 -11,113,000 -16,096,000 -16,759,000   -947,000    -3,176,000 -2,562,000      -3,200,000            
          proceeds from asset dispositions
        735,000  586,000                                                                   
          net cash from investing activities of continuing operations
        174,437,000                                                                     
          net cash from investing activities of discontinued operations
        -8,799,000                                                                     
          net cash from investing activities
        165,638,000 -104,867,000 -57,319,000 -54,274,000 -54,040,000 -60,563,000 -55,500,000 -49,266,000 -47,542,000 -57,027,000 -51,388,000 -54,443,000 -59,582,000 -53,202,000 -45,247,000 -29,242,000 -28,992,000 -24,857,000 -31,786,000 -21,394,000 -37,163,000 -24,612,000 -11,410,000 -19,716,000 -23,986,000 -24,554,000 -38,257,000 -33,070,000 -51,959,000 -169,401,000 2,978,000 -18,165,000  -15,590,000 -24,568,000 -29,076,000  -57,535,000 -57,452,000 -38,339,000  -37,003,000 -31,995,000 -27,880,000  -33,607,000 -23,537,000 -29,352,000 -52,605,000 -356,993,000 -28,201,000   -26,802,000 -24,617,000  -9,365,000 -23,548,000 -22,093,000 -16,701,000 -7,112,000  11,946,000 -655,631,000 -23,322,000 33,696,000 1,415,000 3,215,000 -8,992,000 
          financing activities:
                                                                             
          proceeds from sale of common stock
        63,000  42,093,000    57,265,000 1,103,000 14,003,000 11,885,000                                                          
          acquisition of treasury stock
        -1,161,000     -1,197,000 -1,554,000 -482,000                                                          
          borrowing of debt
          20,000,000 26,000,000 107,000,000  83,000,000 40,000,000 27,000,000 63,000,000 43,000,000 13,000,000                                                          
          repayment of debt
          -310,245,000 -30,000,000 -87,000,000  -132,000,000 -118,000,000 -15,000,000 -14,000,000 -12,000,000 -13,000,000                                                          
          dividends paid to common and preferred stockholders
        -2,786,000 -2,699,000 -2,653,000 -2,512,000 -2,511,000 -8,640,000 -8,697,000 -4,000,000 -3,994,000 -3,947,000 -3,917,000 -3,891,000 -2,383,000 -3,522,000 -3,518,000 -3,509,000                                                      
          repayments of finance leases and other
        -1,249,000 -2,072,000 -2,423,000 -1,933,000 -2,287,000                                                                 
          net cash from financing activities of continuing operations
        -5,133,000                                                                     
          net cash from financing activities of discontinued operations
        -8,431,000                                                                     
          net cash from financing activities
        -13,564,000 -4,771,000 -253,228,000 164,802,000 15,202,000 -1,463,000 -2,768,000 -84,472,000 4,879,000 41,828,000 37,231,000 5,048,000 -17,077,000 23,688,000 -6,932,000 -7,179,000 -5,198,000 -8,032,000 -12,579,000 -6,789,000 2,657,000 -26,002,000 -165,850,000 169,816,000 -4,432,000 -6,606,000 46,874,000 -2,647,000 796,000 -37,969,000 -5,052,000 27,341,000 -2,462,000   -4,014,000 -4,241,000 -4,549,000 -96,000 -3,135,000  -5,127,000   -3,533,000 34,519,000   -2,559,000         694,000 -622,000 43,696,000 -537,000 -40,991,000 2,364,000 351,381,000 -3,765,000 200,496,000 -23,000 160,000 2,283,000 
          effect of exchange rates on cash
        -330,000 233,000 -168,000 579,000 -100,000 -856,000 960,000 -556,000 -624,000 -1,140,000 1,046,000 171,000 531,000 517,000 -1,840,000 519,000 -59,000 -443,000 -195,000 167,000 766,000 -79,000 -58,000 -1,736,000 618,000 -175,000 337,000 95,000 -1,300,000 317,000 -1,408,000 876,000 44,000 -35,000 -728,000 1,814,000 -701,000 -661,000 -247,000 1,535,000  -1,785,000 301,000 -2,560,000 -1,659,000 -2,374,000 1,948,000 -1,698,000                      
          net increase in cash, cash equivalents and restricted cash and cash equivalents
        345,990,000  -162,666,000            -13,836,000 2,007,000 19,106,000 9,410,000 41,744,000 9,920,000 31,161,000 22,746,000 -139,792,000 153,291,000 29,457,000 23,561,000 -2,363,000 -15,592,000 -33,452,000 -178,861,000 27,153,000 26,435,000                                      
          cash, cash equivalents and restricted cash and cash equivalents at beginning of period
        242,732,000  28,045,000  107,539,000      211,063,000  130,883,000  63,477,000  28,414,000  187,139,000                                      
          cash, cash equivalents and restricted cash and cash equivalents at end of period
        588,722,000  -162,666,000 272,903,000 24,845,000  -2,299,000 -55,576,000 81,332,000      -13,836,000 213,070,000  9,410,000 41,744,000 140,803,000  22,746,000 -139,792,000 216,768,000  23,561,000 -2,363,000 12,822,000  -178,861,000 27,153,000 213,574,000                                      
          reconciliation of cash and cash equivalents and restricted cash and cash equivalents above
                                                                             
          cash and cash equivalents
        587,550,000 107,648,000 -162,655,000 272,897,000 23,668,000                                                                 
          non-current restricted cash and cash equivalents
        1,172,000 2,000 -11,000 6,000 1,177,000                                                                 
          total cash and cash equivalents and restricted cash and cash equivalents as reported on the consolidated cash flow statement
        588,722,000  -162,666,000 272,903,000 24,845,000                                                                 
          supplemental disclosure of cash flow information:
                                                                             
          cash paid for interest
        10,006,000  21,851,000 1,269,000 20,118,000  20,982,000 4,736,000 18,706,000 18,702,000 191,000 18,621,000  18,430,000 146,000 18,603,000  18,674,000 93,000 18,406,000   1,853,000 13,984,000                                              
          cash paid for income and mining taxes
        5,722,000  1,039,000 5,516,000 864,000  731,000 4,872,000 127,000 1,233,000 4,518,000 1,634,000  1,173,000 11,209,000 679,000  830,000                                                    
          significant non-cash investing and financing activities:
                                                                             
          common stock issued as incentive compensation
        72,000 2,503,000 2,163,000 1,070,000 3,355,000                                                             
          common stock issued for 401(k) match
        1,313,000 1,244,000 1,203,000 1,386,000 1,219,000                                                                 
          common shares and royalty asset received for sale of hecla quebec
        130,026,000                                                                     
          foreign exchange loss
                  6,025,000 -2,218,000   -5,722,000 2,280,000  -3,840,000 2,700,000 1,755,000 5,490,000 915,000      5,550,000    -3,399,000 -343,000 5,970,000 4,695,000 506,000                                  
          write-down of property, plant and equipment
                                                                             
          changes in assets and liabilities:
                                                                             
          additions to property, plant and equipment and mine development
                                                                             
          proceeds from disposition of assets
            55,000 221,000 199,000                                                               
          acquisition
                                                                             
          proceeds from sale or exchange of investments
                                                                             
          purchase of silver puts
                                                                             
          proceeds from issuance of common stock, net of offering costs
                                                                             
          acquisition of treasury shares from employee equity awards
                                                                             
          borrowings of debt
                                                                             
          repayments of debt
                            -50,000,000 -160,000,000 -506,500,000 -84,500,000 -77,000,000 -60,000,000 -58,000,000 -24,000,000     -470,000  -468,000 -675,000 -664,000                              
          net increase in cash and cash equivalents and restricted cash and cash equivalents
                                                                             
          cash and cash equivalents and restricted cash and cash equivalents at beginning of year
                                                                             
          cash and cash equivalents and restricted cash and cash equivalents at end of year
                                                                             
          reconciliation of cash and cash equivalents and restricted cash and cash equivalents above to where reported on the consolidated balance sheet
                                                                             
          total cash and cash equivalents and restricted cash and cash equivalents as reported on the consolidated statements of cash flows
                                                                             
          cash paid during year for:
                                                                             
          interest
                                                                             
          income and mining taxes, net of refunds
                                                                             
          non-cash investing and financing activities:
                                                                             
          addition of finance lease obligations and right-of-use assets
                15,242,000 850,000  4,641,000 2,187,000 2,864,000   3,120,000        3,498,000                                          
          recognition of operating lease liabilities and right-of-use assets
                                22,365,000                                          
          properties, plants, equipment and mine development additions in accounts payable and accrued liabilities
                                                                             
          common stock contributed to pension plans
                                                                             
          common stock issued to directors
            26,000                                                                
          common stock issued to interim ceo
             101,000                                                                
          common stock issued for warrant exercises
                                                                             
          common stock issued to atac resources ltd. stockholders
                                                                             
          proceeds from investment sales
                                                                            
          investment purchases
                                                                             
          additions to property, plant and mine development
           -58,043,000 -54,095,000  -55,699,000                                                               
          net decrease in cash, cash equivalents and restricted cash and cash equivalents
            -3,200,000    -26,207,000                                                             
          non-cash elements included in net income
                                                                             
          benefit from reclamation and closure costs
                1,846,000    4,783,000 1,518,000 1,628,000 1,643,000        1,548,000      1,317,000     1,221,000 1,026,000 1,128,000   999,000 1,008,000 772,000 9,478,000 778,000 6,569,000 936,000 1,777,000 933,000   591,000   1,481,000 1,427,000 276,000 277,000 279,000 282,000 282,000 2,220,000  303,000     44,782,000 85,000 
          foreign exchange (gain) loss
                    -857,000           -8,066,000      3,316,000                                        
          pre-acquisition advance to alexco
                                                                            
          common stock issued to alexco resource corp. stockholders
                                                                             
          common stock issued to settle acquired silver stream
                                                                            
          write down of property, plant and equipment
                                                                             
          net foreign exchange gain
                                                                             
          repayments of finance leases
              -2,336,000 -2,472,000 -3,033,000 -3,225,000 -2,301,000 -2,464,000 -2,411,000 -1,889,000 -1,638,000 -1,695,000 -1,687,000 -1,828,000 -1,889,000 -1,881,000 -1,707,000 -1,406,000 -1,556,000 -1,284,000 -1,673,000 -2,107,000 -2,116,000 -1,261,000                                          
          common stock issued to atac resources ltd. shareholders
                                                                             
          common stock issued for 401-k match
              1,392,000 1,071,000 1,251,000                                                             
          cash from operating activities
               78,718,000 17,080,000 10,235,000 23,777,000 40,603,000  -24,322,000 40,183,000 37,909,000  42,742,000 86,304,000 37,936,000  73,439,000 37,526,000 4,927,000  54,896,000 -11,317,000 20,030,000  28,192,000 30,635,000 16,383,000  28,294,000 7,536,000 38,285,000  86,976,000 67,390,000 18,748,000  26,795,000 30,754,000 21,419,000  1,739,000 26,646,000 30,383,000 -5,195,000 -1,085,000 11,360,000  35,248,000 -10,186,000 41,426,000 60,721,000   41,914,000    18,995,000       
          foreign exchange gain
                -3,982,000                            -2,906,000   7,989,000 -2,515,000 -7,894,000 1,818,000 -11,490,000  -5,877,000 4,633,000 -4,688,000                      
          additions to properties, plants, equipment and mineral interests
                -47,589,000 -55,354,000 -51,468,000 -54,443,000 -56,141,000 -37,430,000 -34,329,000 -21,478,000 -28,838,000 -26,899,000 -31,898,000 -21,413,000 -36,634,000 -23,693,000 -10,819,000 -19,870,000 -24,083,000 -26,093,000 -38,174,000 -33,071,000 -53,648,000 -39,981,000 -25,669,000 -17,635,000 -27,648,000 -24,426,000 -24,306,000 -21,658,000 -44,552,000 -43,276,000 -42,306,000 -34,654,000 -42,044,000 -37,127,000 -31,314,000 -26,958,000 -31,840,000 -33,236,000 -30,594,000 -26,867,000 -52,515,000 -34,538,000 -25,753,000   -26,883,000 -24,652,000  -18,749,000 -21,831,000 -22,093,000 -18,177,000 -8,250,000 -6,177,000 -22,884,000 -20,094,000 -11,067,000     
          proceeds from disposition of properties, plants and equipment
                47,000 80,000    18,000 113,000 617,000   112,000 19,000   46,000 154,000   24,000 1,000   312,000 151,000   81,000 61,000   102,000 215,000   128,000 25,000 -19,000 209,000   126,000 142,000 628,000 81,000 35,000 1,000 112,000       48,000   
          net loss
                 -22,415,000           795,000 13,628,000                                                
          non-cash elements included in net loss:
                                                                             
          change in restricted cash
                                                                             
          proceeds from sale of investments
                     6,888,000 2,487,000                                1,000       1,366,000 1,138,000        
          acquisitions
                                                                             
          credit facility fees paid
                     -443,000 -20,000 -54,000   -82,000   -93,000 -458,000    -39,000        -91,000                                  
          net decrease in cash, cash equivalents and restricted cash
                                                                             
          cash, cash equivalents and restricted cash at beginning of period
                 105,907,000                                                          
          cash, cash equivalents and restricted cash at end of period
                 -6,104,000 10,666,000 97,286,000                                                          
          common stock issued to alexco resource corp. shareholders
                                                                             
          common stock issued to pension plans
                                                                             
          adjustments of inventory to net realizable value
                  2,997,000 4,521,000                                                          
          net increase in cash, cash equivalents and restricted cash
                  10,666,000 -8,621,000                                                          
          adjustment of inventory to net realizable value
                                                                             
          stock compensation
                    1,714,000 1,773,000   1,308,000 1,472,000 2,802,000 500,000 1,229,000 2,801,000 1,209,000 1,219,000 910,000 1,206,000 1,972,000 1,580,000 1,606,000 2,231,000 1,314,000 1,127,000 1,380,000 2,112,000 1,482,000 1,349,000 1,370,000 1,347,000 2,236,000 1,231,000 1,389,000 1,775,000 1,201,000 1,060,000 1,139,000 1,265,000 1,496,000 1,065,000 1,383,000 1,072,000 798,000 805,000 801,000 937,000 558,000 577,000 543,000 377,000 863,000 2,140,000 333,000 434,000 562,000 2,903,000 283,000   2,551,000 227,000 
          accounts payable and accrued liabilities
                      31,026,000 -13,907,000 13,894,000 -8,200,000 18,056,000 -24,545,000 21,141,000 13,653,000 -3,536,000 -11,879,000 -29,971,000 17,701,000 -2,589,000 -9,496,000 5,487,000 3,607,000 -5,255,000 13,956,000 -8,675,000 3,178,000 -9,427,000 -1,510,000 -8,581,000 5,862,000 -13,856,000 10,036,000 -8,197,000 8,196,000 -8,247,000 4,037,000 -15,251,000 12,638,000 -11,668,000 -5,416,000 2,784,000 8,502,000 -2,712,000 366,000 4,172,000 5,969,000 -5,580,000 4,415,000 11,775,000 1,043,000 6,314,000 7,341,000 2,677,000 1,222,000 -4,030,000   -859,000 6,494,000   
          purchase of carbon credits
                        -669,000                                                     
          proceeds from disposition of properties, plants, equipment and mineral interests
                        515,000                                                     
          other
                                                                             
          cash, cash equivalents and restricted cash and cash equivalents at beginning of year
                                                                             
          cash, cash equivalents and restricted cash and cash equivalents at end of year
                                                                             
          cash (paid) received during year for:
                                                                             
          income and mining taxes
                                                                             
          addition of finance lease obligations
                        864,000    3,366,000    3,008,000                                            
          payment of accrued compensation in restricted stock units
                                              3,016,000 4,600,000                      
          equity securities received from exchange of investments
                                                                             
          write-down of inventory
                     1,405,000                                                        
          draw on revolving credit facility
                                                                             
          acquisition of treasury shares
                      -1,756,000 -1,921,000        -595,000   -1,469,000 -1,225,000 125,000 -519,000 -1,743,000 -731,000 -77,000 -979,000 -2,128,000 -1,256,000 1,000 -934,000 -941,000 -2,239,000   -286,000      -451,000 -18,000           
          accounts receivable for proceeds on exchange of investments
                          1,832,000                                                  
          stock-based compensation expense
                       1,271,000                                                      
          deferred taxes
                       2,234,000                                                      
          fee on prepayment of debt with shares of common stock
                                                                             
          loss on disposition of properties, plants, equipment and mineral interests
                                                                             
          amortization of loan origination fees
                        489,000    600,000    718,000 667,000 627,000 625,000 606,000 573,000 449,000 449,000 449,000 448,000 487,000 480,000 474,000 471,000 467,000 459,000 456,000 455,000 456,000 454,000 480,000 568,000 616,000 519,000 508,000 262,000 135,000 136,000 123,000 101,000 100,000 166,000 166,000 166,000 148,000 148,000 172,000 371,000 1,689,000       
          debt issuance and credit facility fees paid
                                                                             
          adjustment to common stock and warrants issued for acquisition of another company
                                                                             
          common stock issued for prepayment of debt
                                                                             
          marketable equity securities received for sale of mineral interest
                                                                            
          gain on exchange of investments
                           -1,158,000                                                  
          unrealized loss on investments
                         2,861,000 750,000 3,506,000 -858,000 -3,979,000   1,227,000    355,000    178,000       711,000 273,000                             
          write-down to stockpile inventory
                         93,000                                                    
          loss on derivative contracts
                         -16,053,000   1,095,000 -6,705,000      3,686,000 -158,000   -9,094,000  11,332,000 -1,957,000 7,343,000  -5,082,000    1,749,000                            
          foundation grant
                                                                           
          change in assets and liabilities, net of business acquisitions:
                                                                             
          proceeds from exchange of investments
                                                                             
          dividends paid to common shareholders
                                 -1,225,000    -1,193,000    -997,000    -968,000    -946,000    -914,000   -857,000 -712,000 -3,565,000   -6,420,000 -3,566,000               
          dividends paid to preferred shareholders
                                 -138,000    -138,000    -138,000    -138,000    -138,000    -138,000   -138,000 -138,000 -138,000   -138,000 -138,000    -139,000    -138,000 -3,408,000 -3,881,000  -138,000 -138,000 -138,000 
          credit facility and debt issuance fees
                                                                             
          borrowings on debt
                            9,220,000 27,607,000 679,500,000 34,500,000 75,000,000 112,000,000 58,000,000    31,024,000                              20,000,000       
          payment of accrued compensation in stock
                                    4,863,000   4,240,000   5,511,000                              
          gain on sale of investments
                                                               -611,000 -588,000        
          amortization of loan origination fees and loss on extinguishment of debt
                          379,000 539,000   484,000 2,140,000                                              
          dividends paid to common stockholders
                          -6,027,000 -4,688,000   -1,318,000 -1,304,000    -1,209,000    -998,000    -989,000    -952,000    -924,000    -857,000                      
          dividends paid to preferred stockholders
                          -138,000 -138,000   -138,000 -138,000    -138,000    -138,000    -138,000    -138,000    -138,000    -138,000                      
          deferred taxes
                           32,000                                                  
          gain on derivative contracts
                           -10,962,000                    170,000    -2,970,000    -8,847,000                      
          loss on disposition of investments
                                                                            
          adjustment of inventory to market value
                                1,399,000 959,000                                         
          change in assets and liabilities, net of business acquired:
                                                                             
          insurance proceeds received for damaged property
                                       2,117,000                                     
          maturities of investments
                                    5,559,000 28,835,000 30,501,000 18,800,000 16,813,000 10,722,000 3,634,000 11,409,000 6,400,000                                
          purchase of other companies, net of cash and restricted cash acquired
                                                                             
          dividend paid to preferred stockholders
                                                                             
          cash received during year for:
                                                                             
          income taxes
                                                                             
          common stock and warrants issued for acquisition of other companies
                                                                             
          gain on disposition of investments
                                                                             
          loss on disposition of properties, plants, equipment, and mineral interests
                             -14,000                     116,000 74,000                          
          cash payment for interest
                                                                             
          unrealized gain on investments
                               978,000    -96,000                2,843,000                          
          gain on disposition of properties, plants, equipment, and mineral interests
                               -104,000      -3,208,000 -37,000 -129,000  -4,830,000 -62,000 -32,000            275,000   -125,000    -28,000               
          (gain) loss on derivative contracts
                               -10,437,000                     -13,344,000 227,000     -19,620,000   -2,764,000 12,140,000               
          gain on disposition of properties, plants, equipment and mineral interests
                                                                             
          cash received (paid) during year for:
                                                                             
          interest, net of amount capitalized
                                                                             
          income tax (payments) receipts
                                                                             
          balances, january 1, 2017
                                                                             
          stock issued to directors
                                                                             
          common stock issued for cash, net of offering costs
                                                                             
          series b preferred stock dividends declared
                                                                             
          stock issued for 401
                                                                             
          restricted stock units granted
                                                                             
          restricted stock unit distributions
                                                                             
          common stock dividends declared
                                                                             
          common stock issued for employee incentive compensation
                                                                             
          other comprehensive loss
                                                                             
          balances, december 31, 2017
                                                                             
          change in accounting for marketable equity securities
                                                                             
          common stock and warrants issued for purchase of another company
                                                                             
          other comprehensive income
                                                                             
          balances, december 31, 2018
                                                                             
          adjustment to fair value of warrants issued for purchase of another company
                                                                             
          balances, december 31, 2019
                                                                             
          acquisition of klondex, net of cash and restricted cash acquired
                                                                             
          proceeds from sale of common stock, net of offering costs
                                            6,069,000 2,052,000                              
          credit availability and debt issuance fees
                                                                             
          common stock issued for the acquisition of other companies
                                                                             
          loss on investments
                                                                             
          gain on disposition or impairment of properties, plants, equipment, and mineral interests
                                                                             
          credit availability and debt issuance fees paid
                                                                             
          acquisition costs
                                                                            
          borrowings under debt arrangements
                                                                             
          repayments of capital leases
                                    -1,347,000 -2,230,000 -2,440,000 -1,322,000  -1,820,000 -1,650,000 -1,595,000  -1,972,000 -2,238,000 -2,118,000   -2,593,000 -2,347,000 -2,244,000 -2,368,000 -2,122,000 -2,403,000 -1,746,000 -1,885,000 -1,540,000   -1,428,000 -1,064,000               
          capital leases acquired
                                                                     -200,000        
          addition of capital lease obligations
                                     4,562,000 2,446,000  1,794,000 2,847,000 1,798,000  666,000    1,977,000 770,000 1,599,000  1,257,000 -1,000 2,194,000 949,000 6,725,000  3,280,000 1,411,000 4,417,000 810,000   1,719,000           
          issuance of debt
                                                                             
          unrealized (gain) on investments
                                       -310,000                                      
          loss on disposal of investments
                                           167,000                                  
          loss (gains) on derivative contracts
                                                                             
          redemptions of restricted cash and investment balances
                                                                             
          purchase of other companies, net of cash acquired
                                                                             
          net cash used by investing activities
                                                                             
          payments on debt
                                                -654,000                             
          payments on capital leases
                                                                             
          net increase in cash and cash equivalents
                                        13,184,000   7,009,000 1,933,000     -17,120,000   -12,695,000 277,000   -58,539,000 127,761,000 -22,370,000   -45,177,000 12,041,000 36,307,000 55,774,000 38,056,000   11,664,000 20,016,000 33,305,000 -311,862,000 -15,451,000 252,198,000 23,998,000 11,393,000 9,656,000 
          cash and cash equivalents at beginning of year
                                                                             
          cash and cash equivalents at end of year
                                                                             
          common stock issued for acquisition of other companies
                                                                             
          acquisitions of other companies, net of cash acquired
                                                                             
          changes in restricted cash and investment balances
                                         22,000           6,819,000 -2,485,000 -91,000 67,000 -12,000                  
          cash and cash equivalents at beginning of period
                                         169,777,000  155,209,000  209,665,000  212,175,000 190,984,000  266,463,000 283,606,000 104,678,000  373,123,000  75,878,000 
          cash and cash equivalents at end of period
                                         8,810,000 -12,673,000 176,786,000  24,231,000 9,595,000 134,018,000  -17,120,000 -4,657,000 196,231,000  277,000 14,441,000 207,642,000 -58,539,000 127,761,000 168,614,000  -1,133,000 -45,177,000 278,504,000 36,307,000 55,774,000 321,662,000 19,199,000 81,036,000 116,342,000  33,305,000 -311,862,000 357,672,000  23,998,000 11,393,000 85,534,000 
          gain on investments
                                                                             
          other non-cash charges
                                                            297,000 334,000 270,000 541,000 67,000 324,000 362,000 -118,000 446,000 -1,021,000        
          net provided by (cash used) in financing activities
                                                                             
          net decrease in cash and cash equivalents
                                              9,595,000 -21,191,000    -13,434,000    -4,533,000                      
          unrealized (gain) loss on investments
                                           -327,000                                  
          other non-cash gains
                                           2,000    6,000    24,000                          
          addition to restricted cash for environmental matters
                                               -3,900,000                              
          net income on sale of investments
                                                                             
          (gain) loss on disposition of properties, plants, equipment and mineral interests
                                                                             
          proceeds from exercise of warrants
                                                    40,306,000                        
          senior notes contributed to pension plan, par value
                                                    1,500,000                        
          (gain) loss on disposition of properties, plants, equipment, and mineral interests
                                               -210,000                              
          acquisition of revett, net of cash acquired
                                                                            
          common stock issued for the acquisition of revett
                                                                            
          debt origination fees
                                               -59,000    -63,000    -468,000                      
          net gain on sale of investments
                                                                             
          purchase of a business, net of cash acquired
                                                                             
          credit facility and debt issuance fees paid
                                                                             
          net cash (used) provided by financing activities
                                                   -4,413,000    -3,866,000   -5,529,000    -4,768,000               
          increase to asset retirement obligations
                                                       8,210,000                      
          reversal of purchase price allocation to product inventory
                                                                             
          increases in restricted cash and investment balances
                                                                             
          acquisition of aurizon, net of cash acquired
                                                                             
          debt issuance and loan origination fees paid
                                                                             
          income tax receipts
                                                                             
          stock issued for acquisition of assets
                                                                             
          changes in asset retirement obligations
                                                                             
          debt issuance and loan origination fees
                                                                             
          stock issued for the acquisition of aurizon
                                                                            
          increase in asset retirement obligations
                                                                            
          change in assets and liabilities, net of amounts acquired in business combination:
                                                                             
          acqusition of aurizon, net of cash acquired
                                                                             
          other non-cash (gains) charges
                                                       4,000   -11,000                   
          accounts payable change relating to capital additions
                                                        -1,524,000 -48,000 -6,529,000 6,632,000 727,000 -1,506,000 -2,126,000 3,948,000 6,261,000 -3,488,000            
          change in assets and liabilities, net of amounts acquired:
                                                                             
          debt issuance fees
                                                                             
          change in cash and cash equivalents:
                                                                             
          loss on impairment of investments
                                                                           
          amortization of intangible asset
                                                                      405,000       
          proceeds from exercise of warrants and stock options
                                                                 4,739,000            
          dividend paid to preferred shareholders
                                                                 -3,408,000   -828,000         
          loan origination fees paid
                                                                             
          income tax payments
                                                                             
          preferred stock dividends paid in common stock
                                                                  3,271,000 3,276,000 16,344,000         
          proceeds from exercise of stock options and warrants
                                                               270,000             
          loan origination fees
                                                                      -26,000       
          gain on disposition of properties, plants and equipment
                                                                        -152,000  -45,000 -63,798,000 -29,000 
          unrealized gain on derivative contracts
                                                                 -5,186,000            
          other current and noncurrent assets
                                                                 1,683,000   1,268,000         
          decreases in restricted cash and investment balances
                                                                 5,000            
          repayments of debt and capital leases
                                                                 -619,000 -483,000 -369,000 -375,000 -38,740,000        
          addition of capital equipment through lease obligations
                                                                 1,065,000            
          preferred shares issued for debt-related expenses
                                                                             
          gain on termination of employee benefit plan
                                                                            
          loss on derivative contract
                                                                            
          accrued reclamation and closure costs and other noncurrent liabilities
                                                                             
          decrease in restricted investments
                                                                             
          proceeds from issue of common stock, net of related costs
                                                                             
          payments on interest rate swap
                                                                     -793,000        
          preferred stock issued for debt-related fees
                                                                             
          proceeds from issuance of stock, net of related costs
                                                                             
          net increase cash and cash equivalents
                                                                             
          preferred shares issued for debt-related fees
                                                                             
          accrued reclamation and closure costs
                                                                    -249,000         
          other non-current liabilities
                                                                    116,000    -989,000     
          proceeds from issuance of common stock and warrants and exercise of stock options, net of related expense
                                                                    666,000         
          addition of capital equipment lease obligations
                                                                             
          equity securities received from dispositions of assets
                                                                             
          loss on discontinued operations, net of tax
                                                                      -10,000       
          income (loss) from continuing operations
                                                                             
          charitable foundation donation paid with common stock
                                                                             
          net cash from (used by) discontinued operations
                                                                      82,000       
          purchase of 70.3% of greens creek, net of cash acquired
                                                                            
          purchase of securities held for sale
                                                                             
          purchases of short-term investments
                                                                             
          maturities of short-term investments
                                                                             
          net cash from (used by) investing activities
                                                                             
          proceeds from exercise of stock options
                                                                             
          proceeds from issuance of common stock and warrants, net of related expense
                                                                             
          proceeds from issuance of preferred stock, net of related expense
                                                                             
          treasury share purchase
                                                                             
          stock issued for acquisition of 70.3% of greens creek
                                                                            
          other noncurrent liabilities
                                                                             
          net cash used by discontinued operations
                                                                             
          maturities of short-term investments and securities held for sale
                                                                         38,825,000   
          net cash from discontinued operations
                                                                             
          stock issued for acquisition of properties
                                                                      10,494,000     
          cash from investing activities
                                                                             
          cash from financing activities
                                                                             
          accounts and notes receivable
                                                                      13,439,000 -8,472,000 5,683,000 6,483,000 1,426,000 -6,614,000 3,571,000 
          inventory purchase price allocation adjustment
                                                                             
          purchase of equity securities
                                                                          -181,000 
          decrease (increase) in restricted investments
                                                                             
          purchase of short-term investments and securities held for sale
                                                                             
          purchase of treasury shares
                                                                            
          significant non-cash investing activities:
                                                                             
          deposit on operations held for sale
                                                                             
          increase in restricted cash
                                                                             
          common stock issued under stock option plans
                                                                       39,000 116,000 5,718,000 115,000 506,000 2,421,000 
          recovery of inventory obsolescence
                                                                             
          accounts payable and accrued expenses
                                                                        -1,204,000    -3,630,000 
          deposits on acquisition properties
                                                                        -16,340,000     
          proceeds from sales of property, plants, equipment and mineral interests
                                                                        194,000     
          increase in restricted investments
                                                                        -145,000    -586,000 
          purchases of short-term investments and other securities held for sale
                                                                            -13,750,000 
          maturities of short-term investments and other securities held for sale
                                                                        4,036,000    13,400,000 
          (gain) loss on disposition of properties, plants and equipment
                                                                             
          gain on sale of royalty interests
                                                                             
          benefit from inventory impairment
                                                                             
          redemptions of restricted investments
                                                                             
          purchases of restricted investments
                                                                             
          sale of preferred stock, net of related expense
                                                                             
          other financing activities
                                                                             
          repayments on debt
                                                                             
          provision for inventory obsolescence
                                                                             
          benefit from deferred taxes
                                                                            
          additions to properties, plants and equipment
                                                                          -12,092,000 -8,454,000 -7,875,000 
          purchase of short-term investments
                                                                             
          benefit from inventory obsolescence
                                                                             
          decrease (increase) in restricted cash
                                                                             
          benefit from (recovery of) inventory obsolescence
                                                                            -30,000 
          cumulative effect of change in accounting principle
                                                                             
          loss on disposition of properties, plants and equipment
                                                                             
          issuance of common stock, net of offering costs
                                                                             
          proceeds from sale of discontinued operations
                                                                             
          common stock issued under warrants and stock option plans
                                                                             
          net cash provided (used) by financing activities
                                                                             
          see notes 2, 4, 9 10 and 11 for non-cash investing and financing activities.