7Baggers

International Seaways, Inc
(NYSE:INSW) 

INSW stock logo

International Seaways, Inc. owns and operates a fleet of oceangoing vessels for the transportation of crude oil and petroleum products in the International Flag trade. It operates through two segments, Crude Tankers and Product Carriers. As of March 12, 2021, the company owned and operated a fleet o...

Founded: 1999
Full Time Employees: 1,666
Sector: Industrials
Industry: Marine Shipping

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Quarterly
Annual
    Unit: USD2025-12-31 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 
                                          
      shipping revenues:
                                          
      pool revenues, including 46,687, 57,062, 151,640 and 211,050
                                          
      from companies accounted for by the equity method
    108,097,750 146,023,000 148,772,000 137,596,000 150,992,500 170,007,000 207,681,000 226,282,000 175,408,500 194,465,000 247,591,000 259,578,000 115,932,250 215,240,000 164,727,000 83,762,000 74,340,000 50,543,000 26,455,000 24,659,000 22,495,000 49,217,000 100,059,000 101,209,000 95,427,000 46,278,000             
      time charter revenues
    27,906,500 39,040,000 36,729,000 35,857,000 24,757,500 36,842,000 31,139,000 31,049,000 16,712,250 27,587,000 26,112,000 13,150,000                           
      voyage charter revenues
    12,531,000 11,325,000 10,140,000 9,941,000 11,330,000 18,341,000 18,589,000 17,070,000 16,865,000 19,656,000 18,500,000 14,402,000 16,725,000 13,102,000 15,337,000 11,545,000 10,312,000 20,609,000 8,135,000 7,399,000 12,042,000 19,372,000 13,011,000 15,524,000 20,669,000 17,362,000 17,756,000 28,717,000 23,670,000 18,273,000 16,700,000 8,551,000 10,699,000 10,146,000 15,176,000 21,627,000 18,573,000 13,905,000 
      shipping revenues: - sum
    267,879,000 196,388,000 195,641,000 183,394,000 194,613,000 225,190,000 257,409,000 274,401,000 250,734,000 241,708,000 292,203,000 287,130,000 338,157,000 236,829,000 188,197,000 101,482,000 94,670,000 84,816,000 46,304,000 46,756,000 56,703,000 99,883,000 139,725,000     101,874,000 100,548,000 60,926,000 56,909,000 51,978,000 69,426,000 59,968,000 71,957,000 88,750,000 85,810,000 80,771,000 
      operating expenses:
                                          
      voyage expenses
    7,897,000 3,920,000 6,819,000 5,052,000 3,973,000 5,503,000 5,561,000 3,473,000 2,822,000 5,756,000 3,868,000 3,810,000 2,507,000 2,283,000 2,658,000 3,507,000 1,665,000 11,848,000 1,586,000 1,587,000 3,750,000 5,851,000 4,436,000 5,606,000 6,427,000 5,470,000 6,523,000 7,845,000 7,514,000 9,673,000 6,897,000 3,177,000 4,332,000 3,479,000 2,677,000 4,618,000 3,595,000 3,605,000 
      vessel expenses
    65,879,000 65,815,000 67,421,000 67,028,000 73,171,000 71,269,000 67,840,000 63,381,000 71,023,000 64,596,000 65,151,000 58,769,000 62,229,000 58,565,000 59,563,000 60,317,000 70,679,000 58,174,000 27,877,000 26,327,000 33,634,000 31,501,000 30,278,000 32,960,000 31,571,000 30,350,000 30,746,000 30,538,000 32,384,000 34,433,000 31,528,000 36,658,000 35,039,000 37,095,000 35,373,000 33,728,000 37,005,000 35,401,000 
      charter hire expenses
    7,355,000 7,134,000 9,627,000 9,145,000 8,998,000 7,245,000 6,948,000 6,648,000 8,805,000 11,297,000 10,502,000 8,800,000 9,333,000 7,797,000 7,693,000 7,309,000 6,651,000 5,679,000 5,863,000 5,741,000 5,901,000 6,442,000 7,540,000 10,231,000 12,913,000 14,381,000 13,033,000 17,185,000 14,825,000 10,739,000 10,723,000 8,623,000 9,355,000 9,958,000 11,036,000 11,351,000 10,989,000 9,613,000 
      depreciation and amortization
    41,362,000 41,170,000 41,349,000 39,705,000 39,466,000 39,304,000 36,517,000 34,153,000 33,682,000 33,363,000 32,445,000 29,548,000 28,404,000 27,728,000 27,256,000 27,000,000 27,035,000 25,806,000 17,079,000 16,754,000 18,182,000 19,014,000 18,880,000 18,267,000 18,945,000 18,961,000 18,818,000 18,929,000 18,683,000 19,317,000 16,804,000 17,624,000 20,610,000 20,528,000 19,099,000 18,616,000 19,403,000 20,376,000 
      general and administrative
    13,049,000 11,804,000 12,165,000 13,217,000 15,113,000 13,411,000 11,985,000 12,374,000 12,391,000 12,314,000 11,522,000 11,246,000 13,499,000 11,839,000 10,847,000 10,166,000 10,096,000 8,191,000 6,829,000 8,140,000 7,497,000 7,422,000 6,694,000 7,434,000 7,279,000 6,449,000 6,297,000 6,773,000 6,777,000 5,434,000 6,064,000 6,029,000 6,593,000 6,603,000 5,182,000 6,358,000 4,550,000 9,894,000 
      other operating expenses
    1,804,000 1,520,000 122,000 95,000 105,000 985,000 1,454,000                                
      third-party debt modification fees
          168,000   148,000 13,000 407,000  71,000 900,000 187,000 84,000 26,000      232,000    30,000 13,000 -9,000 1,302,000  110,000 1,191,000 7,939,000    
      gain on disposal of vessels and other assets
    -8,727,000 -13,658,000 -11,229,000 -10,021,000    -51,000                               
      total operating expenses
    129,717,000 117,705,000 126,274,000 124,221,000 149,571,000 124,218,000 102,621,000 119,978,000 103,437,000 127,548,000 123,527,000 101,832,000 105,664,000 108,422,000 100,815,000 107,110,000 114,723,000 147,637,000 63,722,000 58,601,000 154,896,000 83,051,000 71,833,000 71,988,000 77,401,000 74,121,000 76,944,000 82,550,000 82,683,000 96,947,000 66,578,000 78,684,000 157,604,000 83,717,000 81,602,000 75,406,000 114,319,000 128,529,000 
      income from vessel operations
    138,162,000 78,683,000 69,367,000 59,173,000 45,042,000 100,972,000 154,788,000 154,423,000 147,297,000 114,160,000 168,676,000 185,298,000 232,493,000 128,407,000 87,382,000  -20,053,000 -62,821,000 -17,418,000 -11,845,000 -98,193,000 16,832,000 67,892,000 53,349,000 2,136,750 -2,843,000 -7,934,000 19,324,000   -9,669,000 -26,706,000 -88,178,000 -23,749,000 -9,645,000 13,344,000 -28,509,000 -47,758,000 
      other income
    799,000 1,486,000 2,040,000 1,844,000 1,593,000 3,211,000 2,360,000 2,954,000 2,344,000 646,000 3,381,000 4,281,000 2,772,000 360,000 -574,000 -226,000 111,500 -113,000 267,000 292,000 -3,374,250 -208,000 143,000 -13,432,000 -3,102,000 284,000 839,000 1,036,000 -991,000 220,000  679,000 140,000 190,000 -6,760,000 86,000 37,000 -2,244,000 
      income before interest expense
    53,148,250 80,169,000 71,407,000 61,017,000                                   
      interest expense
    -11,868,000 -9,623,000 -9,761,000 -11,452,000 -11,895,000 -12,496,000 -12,425,000 -12,887,000 -14,081,000 -16,817,000 -17,914,000 -16,947,000 -17,091,000 -15,332,000 -12,558,000 -12,740,000 -11,871,000 -10,639,000 -7,006,000 -7,280,000 -7,823,000 -7,999,000 -8,881,000 -12,009,000 -14,281,000 -17,010,000 -17,443,000 -17,533,000 -18,204,000 -17,320,000 -13,086,000 -11,621,000 -11,367,000 -11,030,000 -9,076,000 -8,965,000 -9,525,000 -9,519,000 
      income before income taxes
    127,093,000 70,546,000   34,740,000 91,687,000 144,723,000 144,490,000 135,560,000 97,989,000 154,143,000 172,632,000 218,454,000 113,434,000 69,088,000 -12,997,000 -33,052,000 -67,843,000 -18,782,000 -13,365,000 -116,889,000 13,981,000 64,359,000 33,019,000 15,892,000 -11,095,000 -16,523,000 10,897,000 6,842,000 -47,783,000 -18,796,000 -29,308,000 -90,707,000 -21,793,000 -11,615,000 18,071,000 -57,474,000 -50,882,000 
      income tax benefit
        1,083,000 1,000      1,000                     -7,750 -23,000   -39,250 20,000 
      net income
    127,504,000 70,546,000 61,646,000 49,565,000 35,823,000 91,688,000 144,723,000 144,490,000 132,114,000 97,937,000 153,762,000 172,633,000 218,429,000 113,427,000   -34,634,000 -67,878,000 -18,783,000 -13,365,000 -116,889,000 13,981,000 64,358,000 33,019,000 15,891,000 -11,095,000 -16,523,000 10,897,000 6,958,000 -47,786,000 -18,796,000 -29,316,000 -90,720,000 -21,816,000 -11,619,000 18,067,000 -57,757,000 -50,862,000 
      yoy
    255.93% -23.06% -57.40% -65.70% -72.88% -6.38% -5.88% -16.30% -39.52% -13.66%   -730.68% -267.10%   -70.37% -585.50% -129.19% -140.48% -835.57% -226.01% -489.51% 203.01% 128.38% -76.78% -12.09% -137.17% -107.67% 119.04% 61.77% -262.26% 57.07% -57.11%     
      qoq
    80.74% 14.44% 24.37% 38.36% -60.93% -36.65% 0.16% 9.37% 34.90% -36.31% -10.93% -20.97% 92.57%    -48.98% 261.38% 40.54% -88.57% -936.06% -78.28% 94.91% 107.78% -243.23% -32.85% -251.63% 56.61% -114.56% 154.23% -35.88% -67.69% 315.84% 87.76% -164.31% -131.28% 13.56%  
      weighted-average number of common shares outstanding:
                                          
      basic
    49,335,230,000 49,348,406,000 49,323,071,000 49,307,449,000 49,270,496,000 49,544,412,000 49,387,193,000 48,972,842,000 48,978,452,000 48,861,356,000 49,029,784,000 49,138,613,000 49,381,459,000 49,312,716,000 49,602,181,000   46,903,955,000 28,051,946,000 28,023,815,000  27,932,928,000 28,469,969,000 29,154,639,000  29,249,233,000 29,220,345,000 29,181,233,000 29,136,634,000 29,154,366,000 29,130,230,000 29,106,180,000 29,159,440,000 29,202,437,000 29,194,240,000 29,180,255,000   
      diluted
    49,595,945,000 49,606,210,000 49,476,481,000 49,528,814,000 49,680,127,000 49,881,317,000 49,721,858,000 49,377,948,000 49,428,967,000 49,275,022,000 49,404,837,000 49,646,331,000 49,844,904,000 49,743,700,000 49,878,645,000   46,903,955,000 28,051,946,000 28,023,815,000  28,026,005,000 28,639,780,000 29,348,393,000  29,249,233,000 29,220,345,000 29,223,187,000 29,136,634,000 29,154,366,000 29,130,230,000 29,106,180,000 29,159,440,000 29,202,437,000 29,194,240,000 29,195,544,000   
      per share amounts:
                                          
      basic net income per share
    2.59 1.43 1.25 0.73 1.85 2.93 2.95 2.7 3.13 3.51     -0.725 -1.44 -0.67 -0.48 0.975 0.5 2.26 1.13               
      diluted net income per share
    2.56 1.42 1.25 0.72 1.84 2.91 2.92 2.67 1.99 3.11 3.47     -0.725 -1.44 -0.67 -0.48 0.97 0.5 2.24 1.12               
      pool revenues, including 57,152, 70,090, 104,357 and 153,988
                                          
      pool revenues, including 46,910 and 83,898
                                          
      pool revenues, including 57,062, 72,877, 211,050 and 250,909
                                          
      loss on disposal of vessels and other assets
        -10,350,500 -13,499,000 -27,852,000                                
      income before interest expense and income taxes
        46,635,000 104,183,000 157,148,000 157,377,000 149,641,000 114,806,000 172,057,000 189,579,000 235,545,000 128,766,000 81,646,000  -21,181,000 -57,204,000 -11,776,000 -6,085,000 -109,066,000 21,980,000 73,240,000 45,028,000 8,816,250 5,915,000 920,000 28,430,000 -13,465,000 -30,463,000 -5,710,000 -17,687,000       
      pool revenues, including 70,090, 86,325, 153,988 and 178,032
                                          
      income tax provision
            -3,446,000 -52,000 -381,000  -25,000 -7,000 -52,000 -4,000 -1,582,000 -35,000 -1,000  -250  -1,000      -2,750 -3,000  -8,000   -4,000 -4,000   
      pool revenues, including 83,898 and 91,707
                                          
      pool revenues, including 72,877, 52,722, 250,909 and 107,106
                                          
      loss on disposal of vessels and other assets, net of impairments
            -2,662,000 74,000 26,000  -10,308,000 139,000 -8,102,000 -1,376,000                       
      equity in results of affiliated companies
                                          
      operating income
            147,297,000 114,160,000 168,676,000 185,298,000 232,773,000 128,406,000 82,220,000 -31,000 -14,788,000 -57,091,000 -12,043,000 -6,377,000 -109,746,000 22,188,000 73,097,000 58,460,000 8,276,500 5,631,000 81,000 27,394,000 24,797,000 -30,683,000 -847,000 -18,366,000 -79,480,000 -10,953,000 4,221,000 26,950,000 -47,753,000 -35,270,000 
      yoy
            -36.72% -11.09% 105.15% -597835.48% -1674.07% -324.91% -782.72% -99.51% -86.53% -357.31% -116.48% -110.91% -1426.00% 294.03% 90143.21% 113.40% -66.62% -118.35% -109.56% -249.16% -131.20% 180.13% -120.07% -168.15% 66.44% -68.95%     
      qoq
            29.03% -32.32% -8.97% -20.40% 81.28% 56.17% -265325.81% -99.79% -74.10% 374.06% 88.85% -94.19% -594.62% -69.65% 25.04% 606.34% 46.98% 6851.85% -99.70% 10.47% -180.82% 3522.55% -95.39% -76.89% 625.65% -359.49% -84.34% -156.44% 35.39%  
      pool revenues, including 86,325, 31,114, 178,032 and 54,385
                                          
      pool revenues, including 91,707 and 23,271
                                          
      gain on disposal of vessels and other assets, net of impairments
               -10,748,000                           
      pool revenues, including 52,722, 14,552, 107,106 and 49,656
                                          
      time and bareboat charter revenues
                10,239,000 8,487,000 8,133,000 6,175,000 10,018,000 13,664,000 11,714,000 14,698,000 22,166,000 31,294,000 26,655,000 8,604,000 7,926,000 7,638,000 6,541,000 5,520,000 5,508,000 5,932,000 6,608,000 7,913,000 11,290,000 12,024,000 14,442,000 17,350,000 21,129,000 24,012,000 
      merger and integration related costs
                    3,180,000 47,079,000 481,000                    
      equity in income of affiliated companies
                280,000 -1,000 -5,162,000 5,597,000 5,265,000 5,730,000 5,375,000 5,468,000 -11,553,000 5,356,000 5,205,000 5,111,000 -13,346,000 8,474,000 8,015,000 8,070,000 6,932,000 5,338,000 8,822,000 8,340,000 8,698,000 12,796,000 13,866,000 13,606,000 -19,244,000 12,488,000 
      less: net loss attributable to noncontrolling interests
                    -131,500 -526,000                     
      net income attributable to the company
                218,429,000 113,427,000 69,036,000  -24,875,000 -67,352,000                     
      basic net earnings per share
                0.855 2.3 1.39                        
      diluted net earnings per share
                0.85 2.28 1.38                        
      pool revenues, including 31,114, 17,857, 54,385 and 35,104
                                          
      pool revenues, including 23,271 and 17,247
                                          
      loss from vessel operations
                   -5,628,000             -18,099,000 -36,021,000         
      loss before interest expense and income taxes
                   -257,000                       
      net loss attributable to the company
                   -13,001,000                       
      weighted-average number of common shares outstanding:
                                          
      basic and diluted
                   49,571,337,000 38,407,007,000    28,372,375,000    29,225,483,000            29,157,992,000 29,157,387,000 
      basic and diluted net loss per share
                   -0.26         -0.143 -0.38 -0.57  0.24 -1.64         
      pool revenues, including 14,552, 36,977, 49,656 and 178,934
                                          
      reversal of expected credit losses
                    -4,750 -62,000                     
      loss on disposal of vessels and other property, net of impairments
                    -1,272,000 -9,104,000       7,000 -1,472,000 1,548,000            
      pool revenues, including 17,857, 71,282, 35,104 and 141,957
                                          
      provision for credit losses
                      2,000 41,000 9,000 -13,000 -129,000 62,000 314,750 -18,000 -21,000 1,298,000           
      loss on disposal of vessels and other property, including impairments
                      4,005,000 11,000 85,923,000 12,834,000 4,134,000      2,487,000 17,360,000   81,449,000 5,406,000   29,734,000 49,640,000 
      pool revenues, including 17,247 and 70,675
                                          
      pool revenues, including 36,977, 30,224, 178,934 and 98,115
                                          
      pool revenues, including 71,282, 26,731, 141,957 and 67,891
                                          
      pool revenues, including 70,675 and 41,160
                                          
      gain on disposal of vessels and other property
                           -2,804,000               
      pool revenues, including 30,224, 20,514, 98,115 and 49,639
                                          
      pool revenues, including 26,731, 16,355, 67,891 and 29,125
                                          
      received from companies accounted for by the equity method
                              44,713,000    33,601,000        
      pool revenues, including 41,160 and 12,769 received from companies accounted for by the equity method
                               67,637,000           
      loss on disposal of vessels and other property
                               -48,000    6,573,000       
      basic and diluted net income per share
                               0.37   -0.65 -1.01 -3.11 -0.75 -0.4 0.62 -1.98 -1.74 
      pool revenues, including 20,514, 13,309, 49,639 and 21,725 received from companies accounted for by the equity method
                                26,459,000 36,721,000         
      separation and transition costs
                                    116,000 -543,000 296,000 735,000   
      pool revenues, including 16,355, 2,702, 29,125 and 8,416
                                          
      gain on disposal of vessels and other property, net of impairments
                                  -6,740,000        
      other expense
                                  -4,863,000        
      pool revenues, including 12,769 and 5,714 from companies accounted for by the equity method
                                   35,514,000       
      pool revenues, including 5,530, 6,166, 13,946 and 30,282 from companies accounted for by the equity method
                                    32,477,500 37,798,000     
      income before interest expense, reorganization items and income taxes
                                    -79,340,000 -10,763,000 -2,539,000 27,036,000 -47,716,000 -37,514,000 
      income before reorganization items and income taxes
                                    -90,707,000 -21,793,000 -11,615,000 18,071,000 -57,241,000 -47,033,000 
      reorganization items
                                        -233,000 -3,849,000 
      pool revenues, including 2,702, 9,694, 8,416 and 24,116 from companies accounted for by the equity method
                                      42,339,000    
      pool revenues, including 5,714 and 14,423 received from companies accounted for by the equity method
                                       49,773,000   
      pool revenues, including 6,166, 10,374, 30,282 and 36,510 from companies accounted for by the equity method
                                        50,022,000 42,854,000 
      technical management transition costs
                                          
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 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 
                                            
        assets
                                            
        current assets:
                                            
        cash and cash equivalents
      116,922,000 412,569,000 148,807,000 132,769,000 157,506,000 103,309,000 176,141,000 139,501,000 126,760,000 138,976,000 116,023,000 156,220,000 243,744,000 174,465,000 230,666,000 74,553,000 97,883,000 108,897,000 117,391,000 156,178,000 199,390,000 137,340,000 128,063,000 93,298,000 89,671,000 68,383,000 91,662,000 79,537,000 58,313,000 91,547,000 115,843,000 53,472,000 60,027,000 73,390,000 121,230,000 101,067,000 92,001,000 110,158,000 
        short-term investments
      50,000,000     50,000,000  75,000,000 60,000,000 75,000,000 120,000,000 105,000,000 80,000,000 80,000,000                         
        voyage receivables, net of allowance for credit losses of 52 and 86,
                                            
        including unbilled of 169,610 and 181,211
      177,887,000                                      
        other receivables
      13,836,000 13,656,000 19,734,000 15,711,000 13,771,000 15,682,000 16,785,000 11,887,000 14,303,000 11,285,000 12,840,000 11,559,000 12,583,000 7,891,000 6,779,000 7,368,000 5,651,000 4,320,000 6,324,000 7,469,000 4,479,000 4,702,000 5,003,000 6,053,000 3,938,000 4,108,000 5,576,000 3,872,000 5,246,000 5,125,000  2,621,000 4,411,000 4,608,000 3,797,000 3,930,000 5,302,000 2,089,000 
        inventories
      611,000 577,000 522,000 573,000 1,875,000 378,000 1,850,000 593,000 1,329,000 1,143,000 629,000 698,000 531,000 873,000 804,000 2,335,000 2,110,000 2,578,000 2,103,000 2,271,000 3,601,000 1,400,000 1,878,000 3,559,000 3,896,000 3,428,000 4,110,000 4,122,000 3,066,000 3,941,000 4,828,000 3,977,000 3,270,000 1,659,000 1,556,000 1,391,000 1,338,000 1,195,000 
        prepaid expenses and other current assets
      7,384,000 9,396,000 11,881,000 15,615,000 15,570,000 9,721,000 12,228,000 15,086,000 10,342,000 11,567,000 15,079,000 16,491,000 8,995,000 11,379,000 14,086,000 16,558,000 11,759,000 9,611,000 6,365,000 9,380,000 6,002,000 5,372,000 6,412,000 8,592,000 5,994,000 5,266,000 6,916,000 9,008,000 5,912,000 5,641,000 8,573,000 9,781,000 5,897,000 6,155,000 8,951,000 10,998,000 5,350,000 6,139,000 
        current portion of derivative asset
      406,000 753,000 1,240,000 1,594,000 2,080,000 2,087,000 4,532,000 5,049,000 5,081,000 7,092,000 7,595,000 6,274,000 6,987,000 4,801,000 763,000 2,061,000           30,000 151,000 460,000 619,000 1,738,000        
        total current assets
      367,046,000 591,968,000 332,394,000 326,614,000 376,323,000 372,270,000 434,615,000 490,071,000 464,980,000 473,875,000 559,681,000 562,600,000 642,615,000 509,550,000 435,003,000 246,488,000 224,499,000 228,781,000 212,310,000 221,400,000 256,834,000 220,245,000 242,232,000 215,596,000 187,344,000 156,643,000 182,754,000 192,508,000 167,620,000 180,819,000 203,781,000 120,547,000 131,792,000 144,576,000 198,191,000 184,761,000 170,909,000 170,527,000 
        vessels and other property, less accumulated depreciation
      2,077,986,000    2,050,211,000    1,914,426,000    1,680,010,000    1,802,850,000    1,108,214,000    1,292,516,000    1,330,795,000    1,104,727,000    1,100,050,000  
        vessels construction in progress
      57,725,000 75,434,000 62,734,000 52,565,000 37,020,000 24,401,000 12,137,000 11,905,000 11,670,000   85,662,000 123,940,000 101,701,000 71,036,000 60,034,000 49,291,000 29,375,000 14,606,000                    
        deferred drydock expenditures
      109,257,000 101,484,000 101,554,000 88,532,000 90,209,000 82,628,000 79,184,000 72,884,000 70,880,000 72,314,000 69,887,000 72,874,000 65,611,000 64,013,000 57,592,000 60,473,000 55,753,000 44,170,000 39,405,000 38,150,000 36,334,000 28,785,000 28,115,000 26,888,000 23,125,000 19,742,000 23,382,000 19,114,000 16,773,000 18,627,000 21,810,000 26,014,000 30,528,000 35,330,000 39,710,000 33,979,000 30,557,000 30,862,000 
        operating lease right-of-use assets
      7,220,000 9,860,000 12,462,000 16,917,000 21,229,000 12,295,000 14,778,000 17,195,000 20,391,000 22,738,000 6,308,000 7,085,000 8,471,000 18,069,000 20,917,000 23,425,000 23,168,000 21,992,000 16,999,000 19,157,000 21,588,000 24,013,000 26,386,000 28,940,000 33,718,000 36,580,000 33,216,000 30,570,000           
        pool working capital deposits
      33,051,000 33,859,000 35,859,000 37,316,000 35,372,000 33,794,000 33,238,000 33,998,000 31,748,000 33,501,000 32,521,000 34,076,000                           
        long-term derivative assets
      5,000    801,000    1,153,000    4,662,000    1,296,000   8,642,000                   
        other assets
      16,352,000 29,275,000 16,596,000 17,081,000 25,232,000 16,913,000 17,322,000 32,360,000 6,571,000 6,334,000 5,158,000 9,441,000 9,220,000 13,374,000 14,906,000 12,036,000 7,700,000 3,565,000 7,519,000 5,857,000 3,229,000 2,925,000 3,156,000 3,536,000 2,934,000 3,332,000 2,626,000 2,996,000 5,056,000 4,389,000 5,393,000 7,184,000 2,856,000 1,934,000 1,298,000 2,674,000 2,324,000 1,935,000 
        total assets
      2,668,642,000 2,789,578,000 2,523,215,000 2,542,397,000 2,636,397,000 2,587,846,000 2,674,670,000 2,551,422,000 2,521,819,000 2,561,022,000 2,655,656,000 2,571,530,000 2,615,334,000 2,459,903,000 2,364,241,000 2,366,593,000 2,346,780,000 2,441,833,000 1,518,865,000 1,552,052,000 1,586,539,000 1,712,313,000 1,758,956,000 1,740,728,000 1,753,501,000 1,828,549,000 1,865,209,000 1,891,070,000 1,848,601,000 1,886,706,000 1,946,480,000 1,612,472,000 1,664,484,000 1,724,325,000 1,701,090,000 1,683,329,000 1,662,521,000 1,709,311,000 
        liabilities and equity
                                            
        current liabilities:
                                            
        accounts payable, accrued expenses and other current liabilities
      69,921,000 49,607,000 55,008,000 56,234,000 66,264,000 45,796,000 52,118,000 42,046,000 57,904,000 42,850,000 47,044,000 53,197,000 51,069,000 45,593,000 38,237,000 56,116,000 44,964,000 49,087,000 29,453,000 24,547,000 34,425,000 27,355,000 29,424,000 32,864,000 27,554,000 29,951,000 34,427,000 33,234,000 22,974,000 25,112,000 32,967,000 24,707,000 22,805,000 24,210,000 29,721,000 37,571,000 38,237,000 28,921,000 
        current portion of operating lease liabilities
      3,182,000 5,617,000 7,874,000 12,027,000 14,617,000 7,673,000 10,017,000 10,169,000 10,223,000 9,784,000 452,000 430,000 1,596,000 8,323,000 9,875,000 10,767,000 8,393,000 6,714,000 7,226,000 7,781,000 8,867,000 9,949,000 10,411,000 10,668,000 12,958,000 13,463,000 11,481,000 8,348,000           
        current installments of long-term debt
      25,788,000 282,489,000 287,451,000 50,180,000 50,054,000 49,823,000 49,598,000 127,535,000 127,447,000 134,703,000 199,785,000 155,525,000 162,854,000 166,965,000 160,790,000 178,391,000 178,715,000 220,805,000 61,483,000 61,483,000 61,483,000 61,483,000 81,483,000 81,483,000 70,350,000 51,013,000 57,680,000 57,680,000 51,555,000 57,680,000 48,492,000 20,625,000 24,063,000 13,750,000 22,600,000 22,883,000 6,183,000 6,183,000 
        total current liabilities
      98,891,000 337,713,000 350,333,000 118,441,000 130,935,000 103,292,000 111,733,000 179,750,000 195,574,000 187,337,000 247,281,000 227,478,000 257,389,000 220,881,000 208,902,000 245,274,000 234,611,000 280,937,000 102,112,000 97,727,000 108,896,000 102,822,000 130,545,000 132,629,000 114,476,000 97,715,000 105,500,000 100,450,000 75,270,000 104,531,000 102,447,000 45,366,000 47,235,000 38,245,000 52,321,000 60,509,000 45,103,000 44,193,000 
        long-term operating lease liabilities
      5,954,000 6,206,000 6,598,000 6,947,000 8,715,000 6,773,000 6,958,000 9,270,000 11,631,000 14,021,000 7,539,000 7,738,000 7,740,000 8,087,000 9,172,000 10,814,000 12,522,000 13,113,000 7,541,000 8,916,000 10,253,000 11,593,000 13,504,000 15,718,000 17,953,000 20,530,000 19,030,000 19,512,000           
        long-term debt
      541,291,000 509,527,000 259,804,000 544,730,000 638,353,000 600,689,000 663,054,000 564,203,000 595,229,000 706,999,000 778,266,000 777,154,000 860,578,000 900,509,000 912,900,000 943,032,000 926,270,000 887,673,000 444,566,000 459,451,000 474,332,000 489,194,000 523,414,000 543,111,000 590,745,000 716,736,000 736,826,000 747,955,000 759,112,000 770,305,000 789,537,000 500,643,000 528,874,000 511,948,000 452,904,000 417,017,000 433,468,000 433,207,000 
        other liabilities
      2,229,000 2,345,000 6,701,000 3,430,000 2,346,000 2,462,000 5,489,000 3,309,000 2,628,000 2,588,000 2,296,000 1,877,000 1,875,000 1,594,000 1,590,000 2,023,000 2,288,000 12,701,000 13,410,000 14,129,000 14,861,000 15,986,000 1,249,000 1,332,000 1,489,000 1,893,000 2,129,000 2,304,000 2,442,000 3,822,000 3,955,000 2,821,000 2,721,000 5,046,000 4,834,000 4,590,000 4,438,000 7,142,000 
        total liabilities
      648,365,000 855,791,000 623,436,000 673,548,000 780,349,000 713,216,000 787,234,000 756,532,000 805,062,000 910,945,000 1,035,382,000 1,014,247,000 1,127,582,000 1,131,071,000 1,133,093,000 1,201,143,000 1,176,448,000 1,197,102,000 571,411,000 584,289,000 614,497,000 625,795,000 686,903,000 711,048,000 731,208,000 846,427,000 869,871,000 873,083,000 838,746,000 878,658,000 895,939,000 548,830,000 578,830,000 555,239,000 510,059,000 482,116,000 483,009,000 484,542,000 
        commitments and contingencies
                                            
        equity:
                                            
        capital - 100,000,000 no par value shares authorized; 49,404,078 and 49,194,458
                                            
        shares issued and outstanding
      1,507,325,000 1,505,459,000 1,503,687,000 1,503,451,000 1,504,767,000 1,501,503,000 1,524,400,000 1,488,531,000 1,490,986,000 1,489,041,000 1,487,151,000 1,501,516,000 1,502,235,000 1,557,875,000 1,583,740,000 1,588,606,000 1,591,446,000 1,609,602,000 1,278,365,000 1,279,368,000 1,280,501,000 1,280,811,000 1,281,072,000 1,301,938,000 1,313,178,000 1,311,812,000 1,310,731,000    1,307,645,000   1,305,531,000     
        retained earnings
      523,792,000 438,772,000 406,238,000 374,212,000 359,142,000 382,350,000 364,452,000 306,659,000                               
        equity: - sum
      2,031,117,000 1,944,231,000 1,909,925,000 1,877,663,000 1,863,909,000 1,883,853,000 1,888,852,000 1,795,190,000 1,717,820,000 1,644,918,000 1,614,519,000 1,554,381,000 1,480,788,000 1,317,999,000 1,230,437,000 1,166,267,000 1,182,108,000 1,234,256,000 970,371,000 990,157,000 1,004,655,000 1,121,854,000 1,108,134,000     1,051,293,000 1,039,784,000 1,031,867,000 1,078,988,000 1,097,008,000 1,126,061,000 1,215,706,000 1,239,718,000 1,250,359,000 1,231,779,000 1,288,719,000 
        accumulated other comprehensive loss
      -10,840,000 -10,444,000 -10,146,000 -8,814,000 -7,861,000 -9,223,000 -1,416,000 -300,000        -1,401,000 -12,360,000 -19,477,000 -22,917,000 -22,394,000 -32,613,000 -35,336,000 -36,081,000 -34,962,000 -20,570,000 -43,484,000 -40,282,000 -33,306,000 -29,929,000 -23,819,000 -28,447,000 -33,366,000 -40,407,000 -46,620,000 -48,687,000 -49,146,000 -52,267,000 -63,950,000 
        total equity
      2,020,277,000 1,933,787,000 1,899,779,000 1,868,849,000 1,856,048,000 1,874,630,000 1,887,436,000 1,794,890,000 1,716,757,000 1,650,077,000 1,620,274,000 1,557,283,000 1,487,752,000 1,328,832,000 1,231,148,000 1,165,450,000 1,170,332,000 1,244,731,000 947,454,000 967,763,000 972,042,000 1,086,518,000 1,072,053,000 1,029,680,000 1,022,293,000 982,122,000 995,338,000 1,017,987,000 1,009,855,000 1,008,048,000 1,050,541,000 1,063,642,000 1,085,654,000 1,169,086,000 1,191,031,000 1,201,213,000 1,179,512,000 1,224,769,000 
        total liabilities and equity
      2,668,642,000 2,789,578,000 2,523,215,000 2,542,397,000 2,636,397,000 2,587,846,000 2,674,670,000 2,551,422,000 2,521,819,000 2,561,022,000 2,655,656,000 2,571,530,000 2,615,334,000 2,459,903,000 2,364,241,000 2,366,593,000 2,346,780,000 2,441,833,000 1,518,865,000 1,552,052,000 1,586,539,000 1,712,313,000 1,758,956,000 1,740,728,000 1,753,501,000 1,828,549,000 1,865,209,000 1,891,070,000 1,848,601,000 1,886,706,000 1,946,480,000 1,612,472,000 1,664,484,000 1,724,325,000 1,701,090,000 1,683,329,000 1,662,521,000 1,709,311,000 
        voyage receivables, net of allowance for credit losses of 90 and 86
                                            
        including unbilled receivables of 145,726 and 181,211
       155,017,000                                     
        vessels and other property, less accumulated depreciation of 246,413 and 466,356
       1,947,662,000                                     
        long-term derivative asset
       36,000 99,000 291,000  214,000 1,888,000 2,213,000  4,520,000 4,462,000 2,138,000  6,252,000  5,959,000  7,318,000 6,526,000  2,129,000 973,000     26,000 104,000 704,000 3,114,000 7,875,000        
        capital - 100,000,000 no par value shares authorized; 49,371,469 and 49,194,458
                                            
        voyage receivables, net of allowance for credit losses of 71 and 86
                                            
        including unbilled receivables of 144,116 and 181,211
        150,210,000                                    
        vessels and other property, less accumulated depreciation of 336,451 and 466,356
        1,961,517,000                                    
        capital - 100,000,000 no par value shares authorized; 49,366,276 and 49,194,458
                                            
        voyage receivables, net of allowance for credit losses of 86 and 86
                                            
        including unbilled receivables of 154,389 and 181,211
         160,352,000                                   
        vessels and other property, less accumulated depreciation of 313,141 and 466,356
         2,003,081,000                                   
        capital - 100,000,000 no par value shares authorized; 49,287,457 and 49,194,458
                                            
        voyage receivables, net of allowance for credit losses of 86 and 191,
                                            
        including unbilled of 181,211 and 237,298
          185,521,000                                  
        capital - 100,000,000 no par value shares authorized; 49,194,458 and 48,925,562
                                            
        voyage receivables, net of allowance for credit losses of 190 and 191
                                            
        including unbilled receivables of 185,262 and 237,298
           191,093,000                                 
        vessels and other property, less accumulated depreciation of 502,936 and 427,274
           2,045,331,000                                 
        capital - 100,000,000 no par value shares authorized; 49,192,838 and 48,925,562
                                            
        voyage receivables, net of allowance for credit losses of 223 and 191
                                            
        including unbilled receivables of 216,523 and 237,298
            223,079,000                                
        vessels and other property, less accumulated depreciation of 476,288 and 427,274
            2,081,508,000                                
        capital - 100,000,000 no par value shares authorized; 49,674,286 and 48,925,562
                                            
        voyage receivables, net of allowance for credit losses of 238 and 191
                                            
        including unbilled receivables of 234,260 and 237,298
             242,955,000                               
        vessels and other property, less accumulated depreciation of 452,717 and 427,274
             1,890,796,000                               
        capital - 100,000,000 no par value shares authorized; 48,999,765 and 48,925,562
                                            
        voyage receivables, net of allowance for credit losses of 191 and 261,
                                            
        including unbilled of 237,298 and 279,567
              247,165,000                              
        finance lease right-of-use assets
                 22,001,000 44,391,000                          
        current portion of finance lease liabilities
                 18,326,000 41,870,000                          
        capital - 100,000,000 no par value shares authorized; 48,925,562 and 49,120,648
                                            
        retained earnings/
              226,834,000 155,877,000 127,368,000 52,865,000                           
        accumulated other comprehensive income
              -1,063,000 5,159,000 5,755,000 2,902,000 6,964,000 10,833,000 127,000                        
        voyage receivables, net of allowance for credit losses of 129 and 261
                                            
        including unbilled receivables of 212,340 and 279,567
               219,827,000                             
        vessels held for sale
               8,985,000      23,148,000   29,146,000                    
        vessels and other property, less accumulated depreciation of 404,280 and 331,903
               1,947,740,000                             
        capital - 100,000,000 no par value shares authorized; 48,893,133 and 49,120,648
                                            
        voyage receivables, net of allowance for credit losses of 56 and 261
                                            
        including unbilled receivables of 234,392 and 279,567
                241,088,000                            
        advance payment on debt
                46,427,000                            
        vessels and other property, less accumulated depreciation of 378,341 and 331,903
                1,977,639,000                            
        capital - 100,000,000 no par value shares authorized; 48,889,609 and 49,120,648
                                            
        restricted cash
                 18,329,000  1,060,000 1,054,000 1,051,000 1,050,000 6,517,000 16,173,000 16,223,000 16,287,000 16,314,000 16,398,000 17,029,000 60,572,000 55,839,000 58,630,000 57,618,000 59,331,000 32,313,000 27,010,000 37,714,000 10,579,000      
        voyage receivables, net of allowance for credit losses of 123 and 261
                                            
        including unbilled receivables of 238,212 and 279,567
                 248,029,000                           
        vessels and other property, less accumulated depreciation of 353,314 and 331,903
                 1,775,653,000                           
        capital - 100,000,000 no par value shares authorized; 49,171,314 and 49,120,648
                                            
        voyage receivables, net of allowance for credit losses of 261 and 31,
                                            
        including unbilled of 279,567 and 100,137
                  289,775,000                          
        investments in and advances to affiliated companies
                  36,414,000 38,109,000 39,832,000 183,361,000 180,331,000 177,402,000 149,580,000 144,770,000 141,924,000 156,589,000 155,191,000 151,400,000 153,292,000 271,655,000 265,959,000 267,518,000 268,322,000 275,420,000 275,034,000 384,024,000 378,894,000 380,718,000 372,109,000 376,237,000 358,681,000 363,244,000 
        time charter contracts acquired
                    159,000 502,000 842,000 3,125,000                     
        current portion of derivative liabilities
                      2,539,000   3,916,000                   
        long-term portion of derivative liabilities
                      757,000                      
        capital - 100,000,000 no par value shares authorized; 49,120,648 and 49,612,019
                                            
        accumulated deficit
                  -21,447,000 -239,876,000 -353,303,000 -422,339,000 -409,338,000 -375,346,000 -307,994,000 -289,211,000 -275,846,000 -158,957,000 -172,938,000 -237,296,000 -270,315,000 -286,206,000 -275,111,000 -258,588,000 -269,485,000 -276,443,000 -228,657,000 -209,861,000 -180,545,000 -89,825,000 -68,009,000 -56,390,000   
        total equity before noncontrolling interest
                  1,487,752,000    1,169,748,000                      
        noncontrolling interest
                      584,000                      
        voyage receivables, net of allowance for credit losses of 161 and 31
                                            
        including unbilled receivables of 225,857 and 100,137
                   230,141,000                         
        vessels and other property, less accumulated depreciation of 310,096 and 249,336
                   1,707,775,000                         
        current portion of derivative liability
                       4,331,000 3,950,000  4,121,000 4,035,000 9,227,000 7,614,000 3,614,000 3,288,000 1,912,000 1,188,000 707,000 770,000         
        long-term derivative liability
                    529,000   2,678,000 3,782,000   6,200,000 18,191,000 18,258,000  9,553,000 6,386,000 2,862,000           
        capital - 100,000,000 no par value shares authorized; 49,058,615 and 49,612,019
                                            
        total equity before noncontrolling interests
                   1,328,832,000 1,230,564,000 1,164,866,000  1,214,779,000                     
        noncontrolling interests
                    584,000 584,000  29,952,000                     
        voyage receivables, net of allowance for credit losses of 68 and 31
                                            
        including unbilled receivables of 176,234 and 100,137
                    181,905,000                        
        vessels and other property, less accumulated depreciation of 287,846 and 249,336
                    1,723,742,000                        
        capital - 100,000,000 no par value shares authorized; 49,695,732 and 49,612,019
                                            
        voyage receivables, net of allowance for credit losses of 27 and 31
                                            
        including unbilled receivables of 113,633 and 100,137
                     120,465,000                       
        vessels and other property, less accumulated depreciation of 266,771 and 249,336
                     1,773,264,000                       
        capital - 100,000,000 no par value shares authorized; 49,641,506 and 49,612,019
                                            
        voyage receivables, net of allowance for credit losses of 31 and 55,
                                            
        including unbilled of 100,137 and 38,430
                      107,096,000                      
        capital - 100,000,000 no par value shares authorized; 49,612,019 and 28,014,877
                                            
        voyage receivables, net of allowance for credit losses of 33 and 55
                                            
        including unbilled receivables of 84,605 and 38,430
                       96,858,000                     
        vessels and other property, less accumulated depreciation of 230,623 and 186,084
                       1,908,928,000                     
        capital - 100,000,000 no par value shares authorized; 50,689,089 and 28,014,877
                                            
        voyage receivables, net of allowance for credit losses of 95 and 55
                                            
        including unbilled of 47,740 and 38,430
                        50,981,000                    
        vessels and other property, less accumulated depreciation of 209,090 and 186,084
                        1,055,747,000                    
        capital - 100,000,000 no par value shares authorized; 28,128,298 and 28,014,877
                                            
        voyage receivables, net of allowance for credit losses of 93 and 55
                                            
        including unbilled of 41,807 and 38,430
                         46,102,000                   
        vessels and other property, less accumulated depreciation of 199,215 and 186,084
                         1,097,853,000                   
        long-term derivative liabilities
                         4,066,000                   
        capital - 100,000,000 no par value shares authorized; 28,055,890 and 28,014,877
                                            
        voyage receivables, net of allowance for credit losses of 55 and 1,245,
                                            
        including unbilled of 38,430 and 74,355
                          43,362,000                  
        long-term portion of derivative liability
                          6,155,000    6,545,000    1,922,000          
        capital - 100,000,000 no par value shares authorized; 28,014,877 and 29,274,452
                                            
        voyage receivables, net of allowance for credit losses of 46 and 1,245
                                            
        including unbilled of 67,089 and 74,355
                           71,431,000                 
        vessels and other property, less accumulated depreciation of 317,249 and 364,868
                           1,262,469,000                 
        capital - 100,000,000 no par value shares authorized; 27,984,807 and 29,274,452
                                            
        voyage receivables, net of allowance for credit losses of 62 and 1,245
                                            
        including unbilled of 96,324 and 74,355
                            100,876,000                
        vessels and other property, less accumulated depreciation of 347,172 and 364,868
                            1,287,478,000                
        capital - 100,000,000 no par value shares authorized; 27,974,378 and 29,274,452
                                            
        voyage receivables, net of allowance for credit losses of 1,299 and 1,245,
                                            
        including unbilled of 97,948 and 74,355
                             104,094,000               
        vessels and other property, less accumulated depreciation of 378,747 and 364,868
                             1,297,339,000               
        capital - 100,000,000 no par value shares authorized; 28,823,465 and 29,274,452
                                            
        voyage receivables, including unbilled of 74,355 and 87,725
                              83,845,000              
        capital - 100,000,000 no par value shares authorized; 29,274,452 and 29,184,501
                                            
        shipping revenues:
                                            
        pool revenues, including 165,583, 94,441 and 39,572
                                            
        from companies accounted for by the equity method
                              254,055,000              
        time and bareboat charter revenues
                              27,625,000              
        voyage charter revenues
                              84,504,000              
        operating expenses:
                                            
        voyage expenses
                              26,265,000              
        vessel expenses
                              123,205,000              
        charter hire expenses
                              57,512,000              
        depreciation and amortization
                              75,653,000              
        general and administrative
                              26,798,000              
        benefit from credit losses
                              1,245,000              
        third-party debt modification fees
                              30,000              
        separation and transition costs
                                            
        loss on disposal of vessels and other property, including impairments
                              308,000              
        total operating expenses
                              311,016,000              
        income/(loss) from vessel operations
                              55,168,000              
        equity in income of affiliated companies
                              11,213,000              
        operating income/
                              66,381,000              
        other income
                              -943,000              
        income/(loss) before interest expense and income taxes
                              65,438,000              
        interest expense
                              -66,267,000              
        income before income taxes
                              -829,000              
        income tax (provision)/benefit
                                            
        net income
                              -830,000              
        weighted-average number of common shares outstanding:
                                            
        basic and diluted
                              29,225,483,000              
        per share amounts:
                                            
        basic and diluted net income per share
                              -30              
        voyage receivables, including unbilled of 65,716 and 87,725
                               75,458,000             
        vessels and other property, less accumulated depreciation of 349,430 and 307,051
                               1,284,758,000             
        voyage receivables, including unbilled of 65,831 and 87,725
                                74,460,000            
        vessels and other property, less accumulated depreciation of 335,960 and 307,051
                                1,291,862,000            
        vessel held for sale
                                6,754,000   17,665,000  17,940,000 5,108,000      
        capital - 100,000,000 no par value shares authorized; 29,273,175 and 29,184,501
                                            
        voyage receivables, including unbilled of 85,103 and 87,725
                                 95,818,000           
        vessels and other property, less accumulated depreciation of 322,003 and 307,051
                                 1,320,642,000           
        total vessels, deferred drydock and other property
                                 1,339,756,000 1,347,568,000 1,390,651,000 1,427,387,000 1,063,003,000 1,140,363,000 1,197,097,000 1,129,492,000 1,119,657,000 1,130,607,000 1,173,605,000 
        capital - 100,000,000 no par value shares authorized; 29,199,074 and 29,184,501 shares issued and outstanding
                                 1,309,881,000           
        voyage receivables, including unbilled of 87,725 and 54,701
                                  94,623,000          
        payable to osg
                                  34,000 34,000 34,000 34,000 367,000 285,000  55,000 683,000  
        capital - 100,000,000 no par value shares authorized; 29,184,501 and 29,089,865 shares issued and outstanding
                                  1,309,269,000          
        voyage receivables, including unbilled of 69,471 and 54,701
                                   73,946,000         
        vessels and other property, less accumulated depreciation of 294,157 and 307,010
                                   1,354,359,000         
        payable associated with acquisition of assets
                                   20,935,000 20,954,000        
        capital - 100,000,000 no par value shares authorized; 29,183,431 and 29,089,865 shares issued and outstanding
                                   1,308,310,000         
        voyage receivables, including unbilled of 59,015 and 54,701
                                    62,408,000        
        other receivables, including pool deposits of 6,000 and 0
                                    10,391,000        
        vessels and other property, less accumulated depreciation of 317,584 and 307,010
                                    1,405,577,000        
        capital - 100,000,000 no par value shares authorized; 29,177,612 and 29,089,865
                                            
        voyage receivables, including unbilled of 49,578 and 54,701
                                     50,696,000       
        vessels and other property, less accumulated depreciation of 309,859 and 307,010
                                     1,019,049,000       
        capital - 100,000,000 no par value shares authorized; 29,123,331 and 29,089,865 shares issued and outstanding
                                     1,306,869,000       
        voyage receivables, including unbilled of 54,701 and 61,416
                                      58,187,000      
        capital - 100,000,000 no par value shares authorized; 29,089,865 and 29,189,454 shares issued and outstanding
                                      1,306,606,000      
        voyage receivables, including unbilled of 48,638 and 61,416
                                       58,764,000     
        vessels and other property, less accumulated depreciation of 420,951 and 387,570
                                       1,161,767,000     
        capital - 100,000,000 no par value shares authorized; 29,089,865 and 29,189,454
                                            
        voyage receivables, including unbilled of 53,792 and 61,416
                                        62,651,000    
        receivable from osg
                                        6,000    
        vessels and other property, less accumulated depreciation of 416,613 and 387,570
                                        1,089,782,000    
        capital - 100,000,000 no par value shares authorized; 29,248,236 and 29,189,454 shares issued and outstanding
                                        1,307,727,000    
        voyage receivables, including unbilled of 59,085 and 61,416
                                         67,375,000   
        vessels and other property, less accumulated depreciation of 402,008 and 387,570
                                         1,085,678,000   
        capital - 100,000,000 no par value shares authorized; 29,207,750 and 29,189,454 shares issued and outstanding
                                         1,306,749,000   
        voyage receivables, including unbilled of 61,416 and 71,200
                                          66,918,000  
        common stock - 100,000,000 no par value shares authorized;29,189,454 shares issued and outstanding
                                          29,825,000  
        paid-in additional capital
                                          1,276,411,000 1,275,594,000 
        (accumulated deficit)/retained earnings
                                          -74,457,000 -16,700,000 
        voyage receivables, including unbilled of 48,969 and 71,200
                                           50,946,000 
        vessels and other property, less accumulated depreciation of 354,960 and 410,606
                                           1,142,743,000 
        due to former parent for cost sharing reimbursements
                                           9,089,000 
        common stock - 100,000,000 no par value shares authorized; 29,157,387 shares outstanding
                                           29,825,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 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 
                                             
          cash flows from operating activities:
                                             
          net income
        127,504,000 70,546,000 61,646,000 49,565,000 35,823,000 91,688,000 144,723,000 144,490,000 132,114,000 97,937,000 153,762,000 172,633,000 218,429,000 113,427,000    -67,878,000 -18,783,000 -13,365,000  13,981,000 64,358,000 33,019,000    10,897,000   -18,796,000 -29,316,000 -90,720,000 -21,816,000 -11,619,000 18,067,000 -57,757,000 
          items included in net income not affecting cash flows:
                                             
          depreciation and amortization
        41,362,000 41,170,000 41,349,000 39,705,000 39,466,000 39,304,000 36,517,000 34,153,000 33,682,000 33,363,000 32,445,000 29,548,000 28,404,000 27,728,000 27,256,000 27,000,000 27,035,000 25,806,000 17,079,000 16,754,000 18,182,000 19,014,000 18,880,000 18,267,000 18,945,000 18,961,000 18,818,000 18,929,000 18,683,000 19,317,000 16,804,000 17,624,000 20,610,000 20,528,000 19,099,000 18,616,000 19,403,000 
          loss on write-down of vessels and other assets
                    1,697,000   85,886,000 11,667,000                
          amortization of debt discount and other deferred financing costs
        1,282,000 1,014,000 983,000 983,000 1,017,000 1,034,000 1,021,000 1,038,000 1,132,000 1,363,000 1,572,000 1,556,000 1,594,000 1,675,000 1,100,000 855,000 704,000 532,000 537,000 540,000 560,000 630,000 725,000 983,000 1,547,000 1,813,000 1,795,000 1,765,000 1,778,000 1,783,000 1,401,000 1,250,000 1,264,000 1,229,000 1,951,000 1,979,000 1,991,000 
          deferred financing costs write-off
                734,000 1,231,000 555,000 166,000 656,000 349,000 128,000 133,000     572,000 12,501,000 3,215,000    127,000      
          stock compensation
        2,889,000 2,020,000 1,844,000 1,946,000 3,264,000 2,103,000 1,942,000 1,691,000 2,606,000 2,039,000 1,973,000 1,900,000 2,299,000 1,719,000 1,620,000 1,108,000 1,635,000 6,631,000 1,226,000 1,037,000                  
          other – net
        -155,000 -240,000 -250,000 456,000 207,000 -86,000 -183,000 -250,000 -422,000 -580,000 -737,000 -823,000 -1,468,000 -447,000 -907,000 580,000 1,785,000 353,000 406,000 425,000 843,000 392,000 219,000 293,000 923,000 311,000 191,000 36,000 12,000 203,000   -1,000 2,000 -1,000 131,000  
          items included in net income related to investing and financing activities:
                                             
          gain on disposal of vessels and other assets
        -7,629,000 -13,658,000 -11,229,000 -10,021,000 45,000 -13,499,000 -27,852,000 -51,000 -25,286,000 74,000 26,000 -10,748,000 -10,308,000                         
          loss on extinguishment of debt
                           2,000 181,000 22,000 992,000 1,000,000            
          payments for drydocking
        -21,030,000 -19,730,000 -26,551,000 -16,900,000 -14,787,000 -19,430,000 -14,454,000 -9,971,000 -6,917,000 -8,630,000 -6,014,000 -12,978,000 -7,047,000 -10,491,000 -8,219,000 -17,570,000 -18,600,000 -9,096,000 -6,126,000 -8,594,000 -9,817,000 -3,312,000 -4,948,000 -7,565,000 -6,007,000 -2,661,000 -6,440,000 -4,438,000 -552,000 -1,267,000 -1,452,000 -1,249,000 -1,609,000 -3,927,000 -8,834,000 -7,026,000 -4,325,000 
          insurance claims proceeds related to vessel operations
        926,000 1,043,000 559,000 312,000 69,000 116,000 682,000 206,000 298,000 160,000 1,748,000 950,000 756,000 2,510,000 1,081,000 954,000 662,000 474,000 182,000 528,000 532,000 4,136,000 331,000 239,000 1,212,000 327,000 85,000 555,000 311,000 1,597,000 2,467,000 1,061,000      
          changes in operating assets and liabilities:
                                             
          decrease in receivables
        -22,870,000 -4,807,000 10,142,000 25,169,000 5,572,000 31,986,000 19,876,000 4,210,000 -27,338,000 21,261,000 6,941,000 41,746,000     -10,238,000    28,069,000 29,445,000    -998,000 21,358,000 -1,195,000 -20,677,000 -11,538,000 -11,710,000 7,489,000 576,000 3,886,000 4,725,000 -457,000 -15,972,000 
          increase in deferred revenue
            6,863,000    2,372,000    1,600,000    -780,000    1,373,000 -1,348,000                
          purchase of insurance contract in connection with settlement of pension plan obligations
                                            
          net change in inventories, prepaid expenses and other current assets and
                                             
          accounts payable, accrued expense, and other current and long-term liabilities
                                             
          net cash from operating activities
        146,001,000 78,325,000 85,779,000 69,947,000 93,622,000 129,135,000 167,939,000 156,442,000  148,463,000 193,634,000 220,822,000  91,356,000 34,626,000 -19,781,000 -27,159,000 -26,515,000 -1,512,000 -21,006,000 17,349,000 71,101,000 89,372,000 38,318,000  -422,000 19,787,000 23,991,000 -14,327,000 -8,276,000 14,577,000 -4,454,000 -144,000 -7,372,000 -7,582,000 11,273,000 -14,380,000 
          capital expenditures
           
          free cash flows
        146,001,000 78,325,000 85,779,000 69,947,000 93,622,000 129,135,000 167,939,000 156,442,000  148,463,000 193,634,000 220,822,000  91,356,000 34,626,000 -19,781,000 -27,159,000 -26,515,000 -1,512,000 -21,006,000 17,349,000 71,101,000 89,372,000 38,318,000  -422,000 19,787,000 23,991,000 -14,327,000 -8,276,000 14,577,000 -4,454,000 -144,000 -7,372,000 -7,582,000 11,273,000 -14,380,000 
          cash flows from investing activities:
                                             
          expenditures for vessels, vessel improvements and vessels under construction, including deposits for acquisitions
               -26,420,000                              
          security deposits for vessel exchange transactions
                                             
          proceeds from disposal of vessels and other assets
                                             
          expenditures for other property
        -814,000 -74,000 -177,000 -376,000 -506,000 -79,000 -100,000 -701,000 -436,000 -449,000 -62,000 -524,000 -36,000 -165,000 -119,000 -390,000 -529,000 -179,000 -92,000 -179,000 -14,000 -145,000 -140,000 -208,000 -168,000 -105,000 -93,000 -208,000 -763,000 -13,000 -194,000 -126,000 -32,000 -348,000 -26,000 -835,000 
          pool working capital deposits
        -400,000   -200,000 -750,000 -782,000 -2,305,000                             
          investments in short-term time deposits
            -50,000,000 -75,000,000 -25,000,000 -35,000,000 -85,000,000 -90,000,000                          
          proceeds from maturities of short-term time deposits
            50,000,000 75,000,000 60,000,000 40,000,000 80,000,000 70,000,000 65,000,000                          
          net cash from by investing activities
                                             
          cash flows from financing activities:
                                             
          borrowings on nonrevolving credit facility debt
        40,719,000                                     
          borrowings on revolving credit facilities
        60,000,000 20,000,000 70,000,000         50,000,000                     
          repayments on revolving credit facilities
        -60,000,000 -27,381,000 -35,600,000 -101,600,000 -20,000,000            -105,672,000                     
          repayments of debt
            -20,313,000 -19,538,000 -58,365,000 -130,829,000 -55,407,000 -137,449,000 -54,706,000 -26,121,000                        
          premium and fees on extinguishment of debt
                           -42,000                 
          proceeds from sale and leaseback financing, net of issuance and deferred financing costs
                113,995,000 55,722,000 19,214,000 28,715,000 39,675,000 20,401,000                      
          payments on sale and leaseback financing and finance lease
            -12,463,000   -12,146,000 -12,233,000   -34,619,000                          
          payments of deferred financing costs
        -5,630,000 -5,949,000   -5,453,000 -306,000 -571,000 -1,860,000 -632,000 -514,000  -226,000                        
          cash dividends paid
        -42,484,000 -38,012,000 -29,620,000 -34,495,000 -59,031,000 -73,790,000 -86,933,000 -64,662,000 -61,153,000 -69,436,000 -79,252,000 -98,313,000 -55,011,000 -5,889,000 -5,961,000 -2,980,000 -3,019,000 -34,551,000 -1,688,000 -1,681,000 -1,679,000 -1,679,000 -1,683,000 -1,729,000              
          repurchases of common stock
                            -19,985,000 -10,012,000             
          cash paid to tax authority upon vesting or exercise of stock-based compensation
        -1,023,000 -248,000 -1,608,000 -3,262,000 -2,909,000 -4,146,000 -661,000 -149,000 -2,390,000 -2,619,000 -2,923,000                         
          net cash from financing activities
        -274,856,000 206,443,000 -79,312,000 -131,599,000 -21,494,000 -161,296,000 -77,787,000 -100,798,000    -217,792,000  -35,043,000 -57,694,000 11,101,000  -111,663,000 -19,677,000 -18,853,000  -58,642,000 -42,630,000 -63,077,000  -29,008,000 -13,113,000 -7,156,000 -19,382,000 -14,566,000 3,473,000 -33,716,000 26,445,000 45,464,000 27,809,000 -1,710,000 -1,545,000 
          net increase in cash and cash equivalents
        -295,647,000 263,762,000 16,038,000 -24,737,000   36,640,000 12,741,000                           20,163,000 9,066,000 -18,157,000 
          cash and cash equivalents at beginning of year
        157,506,000  126,760,000                         92,001,000 
          cash and cash equivalents at end of year
                                             
          decrease in deferred revenue
         -202,000 1,271,000 -7,618,000   979,000 -5,068,000   118,000 -260,000       -2,995,000     -10,000    15,000 -918,000  564,000    
          net change in inventories, prepaid expenses and other current assets, accounts
                                             
          payable, accrued expenses and other current and long-term liabilities
         1,169,000 6,015,000 -13,650,000  794,000 4,688,000 -14,006,000  -2,131,000 1,245,000 -2,888,000  1,815,000 7,637,000 -2,088,000  -7,975,000 9,416,000 -10,658,000  -4,807,000 2,524,000 766,000  -2,240,000            
          expenditures for vessels, vessel improvements and vessels under construction
         -87,668,000 -17,905,000 -82,973,000  -13,714,000   -12,941,000 -4,150,000 -121,346,000 -66,722,000                          
          security deposits returned for vessel exchange transactions
         5,000,000                                  
          proceeds from disposal of vessels and other property
         66,736,000 27,903,000 115,264,000  23,872,000    -34,000 49,000 20,021,000  -138,000 55,357,000 24,257,000  110,079,000 3,442,000 -11,000 59,557,000 -14,000 -23,000 13,601,000 5,000 6,672,000 9,172,000 -82,000 36,406,000 6,382,000 69,074,000 57,430,000 10,682,000     
          net cash from investing activities
         -21,006,000 9,571,000 36,915,000 -17,931,000 -40,671,000 -53,512,000 -42,903,000 45,284,000 39,033,000 -136,359,000 -72,225,000 -9,228,000 -112,508,000 179,184,000 -14,649,000 17,148,000 137,205,000 -17,648,000 -3,417,000 63,399,000 -3,266,000    3,360,000 6,463,000 2,676,000 27,493,000 3,849,000 33,617,000 58,750,000 -39,664,000 -85,932,000 -64,000 -497,000 -2,232,000 
          payments on sale and leaseback financing
         -12,742,000 -12,397,000 -12,242,000          -9,824,000 -9,731,000 -9,085,000                      
          repurchase of common stock
                                            
          cash and cash equivalents at end of period
         263,762,000 16,038,000 132,769,000  -72,832,000 36,640,000 139,501,000                         -13,363,000 -47,840,000 20,163,000 101,067,000  
          amortization of time charter hire contracts acquired
                    158,000 344,000 340,000 685,000                     
          earnings of affiliated companies
                    -280,000 -4,420,000 -5,597,000 -5,265,000 -5,730,000 -5,375,000 -5,468,000 11,553,000 -5,357,000 -6,358,000 -3,851,000 -5,321,000 -8,578,000 -7,915,000 -8,452,000 -6,236,000 -5,417,000        
          loss on sale of investment in affiliated companies
                                             
          cash distributions from affiliated companies
                    861,000 2,250,000 3,060,000 3,150,000 800,000 2,825,000 -3,856,000 3,250,000 2,000,000 3,250,000 3,641,000 3,686,000 4,478,000 2,050,000 3,855,000 3,904,000 29,651,000 6,212,000      
          proceeds from sale of investment in affiliated companies
                                             
          borrowings on long term debt, net of lenders' fees
                                            
          cash, cash equivalents and restricted cash at beginning of year
                243,744,000 98,933,000 215,677,000 150,243,000 117,644,000 70,606,000      
          equity in results of affiliated companies
                 20,000                          
          net decrease in cash and cash equivalents
                                             
          payments and advance payment on sale and leaseback financing and finance lease
                                             
          merger and integration related costs, noncash
                                            
          net cash from by operating activities
                                             
          cash acquired, net of equity issuance costs related to merger
                        -108,000                     
          cash payments on derivatives containing other-than-insignificant financing element
                        -11,720,000 -1,354,000 -1,311,000 -1,312,000                  
          distribution to noncontrolling interest
                                             
          net cash from by financing activities
                -182,983,000 -164,543,000                            
          net increase in cash, cash equivalents and restricted cash
                -12,216,000 22,953,000   68,219,000 -56,195,000   -33,658,000    62,023,000 9,193,000    -26,070,000 13,137,000 19,511,000 -6,216,000 -18,993,000 51,667,000 20,580,000      
          cash, cash equivalents and restricted cash at end of year
                                             
          loss on sale of investments in affiliated companies
                     1,000                        
          proceeds from sale of investments in affiliated companies
                     -1,103,000                        
          issuance of debt, net of issuance and deferred financing costs
                            362,989,000     -146,000 -2,658,000   29,970,000 98,661,000    
          cash, cash equivalents and restricted cash at end of period
                 22,953,000 -58,526,000 174,549,000  -56,195,000 156,116,000 75,604,000  -973,000 -38,837,000 172,401,000  9,193,000 34,134,000 110,327,000  -26,070,000 13,137,000 137,155,000  -18,993,000 51,667,000 91,186,000      
          net decrease in cash, cash equivalents and restricted cash
                   -69,195,000    -23,329,000   -38,837,000 -43,276,000                  
          change in fair value of interest rate collar recorded through earnings
                            1,271,000              
          investments in and advances to affiliated companies
                    -500,000 2,700,000 -311,000 -527,000 -693,000 -6,766,000 -149,000 54,000 2,393,000 -410,000 364,000 234,000 1,670,000 -44,000 478,000 788,000 925,000 1,097,000 869,000 1,149,000 -1,776,000 -30,000 -74,000 
          repayments of advances from joint venture investees
                                    4,793,000 2,845,000 90,654,000 2,488,000      
          borrowings on long term debt, net of lenders' fees and deferred financing costs
                                             
          write-off of registration statement costs
                         694,000                  
          increase in receivables
                     -48,236,000 -61,440,000 -13,369,000   -4,879,000 -2,740,000    -20,249,000              
          expenditures for vessels and vessel improvements
                     -33,802,000 -15,812,000 -37,989,000  -20,084,000 -20,849,000 -3,281,000 -3,600,000 -5,500,000 -12,035,000 -28,914,000 -26,810,000 -4,441,000 -2,394,000 -2,962,000 -13,731,000 -6,290,000 -127,014,000 -1,911,000 -55,166,000 -99,786,000 -18,186,000 -397,000 -1,397,000 
          investments in short term time deposits
                                             
          cash payments on derivatives containing other-than-insignificant financing elements
                                             
          loss on disposal of vessels and other assets
                      -8,102,000 -3,073,000                      
          common stock issuance costs
                                             
          cash paid to tax authority upon vesting of stock-based compensation
                      -523,000 -970,000 -95,000 -541,000 -489,000 -269,000 -72,000 -495,000 -705,000 -10,000 -210,000 -149,000 -13,000 -119,000 -278,000 -88,000 -20,000 -77,000 -164,000  
          net loss
                       -13,001,000          -11,095,000   6,958,000         
          items included in net loss not affecting cash flows:
                                             
          items included in net loss related to investing and financing activities:
                                             
          extinguishment of debt
                       -10,981,000     -40,000,000 -382,699,000 -100,000,000    -2,069,000     
          payments on debt
                       -35,284,000 -51,870,000 -81,652,000 -15,371,000 -15,371,000 -15,371,000 -15,370,000 -20,371,000 -30,895,000 -11,380,000 -18,879,000 -12,888,000 -6,764,000 -19,014,000 -9,826,000 -9,332,000 -33,438,000 -3,437,000 -50,000,000 -1,546,000  
          release other comprehensive loss upon sale of investment in affiliated companies
                                             
          gain on sale of investment in affiliated companies
                                             
          extinguishment of debt, including premiums and fees
                                             
          gain on disposal of vessels and other property
                               -2,804,000      941,000   387,000    132,000 
          issuance of debt, net of issuance costs
                         19,518,000                    
          loss on disposal of vessels and other property
                          508,000 11,000  1,167,000    -1,472,000 1,548,000 -48,000    6,573,000      
          stock compensation, non-cash
                             1,490,000 1,297,000 1,206,000 1,366,000 1,091,000 1,060,000 761,000 959,000 678,000 896,000 629,000      
          repayments of advances from affiliated companies
                                 -436,000 -178,000 5,450,000     14,250,000 8,000,000   
          payments on derivatives containing other-than-insignificant financing element
                                             
          net cash (used in)/provided by investing activities
                               -15,157,000              
          net (decrease)/increase in cash, cash equivalents and restricted cash
                               -39,916,000              
          loss/(gain) on disposal of vessels and other assets
                                             
          decrease/(increase) in receivables
                                             
          net cash provided by/(used in) operating activities
                                             
          net cash provided by/(used in) investing activities
                                             
          premium on extinguishment of debt
                                -1,992,000             
          net cash (used in)/provided by financing activities
                                             
          net increase/(decrease) in cash, cash equivalents and restricted cash
                                             
          loss on repurchase of debt
                                             
          net change in inventories, prepaid expenses and other current assets, accounts payable, accrued expenses and other current and long-term liabilities
                                   3,131,000          
          loss on write-down of vessels and other fixed assets
                                             
          allocated reorganization items, non-cash
                                            233,000 
          allocated general and administrative costs, non-cash
                                             
          deferred financing costs paid for loan modification
                                            
          decrease in payable to osg
                                    -333,000  290,000 -60,000 -628,000  
          net change in inventories, prepaid expenses and other current assets and accounts payable, accrued expense, and other current and long-term liabilities
                                    -21,915,000   -5,051,000   -2,525,000 -6,713,000  
          dividend payments to osg
                                             
          loss on write-down of vessels
                                        81,062,000     
          undistributed earnings of affiliated companies
                                       -8,425,000 -9,039,000 -13,145,000 -13,807,000 -13,436,000 18,927,000 
          direct and allocated stock compensation, non-cash
                                        1,075,000 1,000,000 993,000 740,000 684,000 
          allocated general and administrative expenses recorded as capital contributions
                                            -74,000 
          discount on repurchase of debt
                                             
          increase in payable to osg
                                             
          decrease in restricted cash
                                            
          deferred income tax benefit
                                             
          bankruptcy claim payments
                                             
          increase in cost sharing reimbursement payable to osg
                                             
          net change in inventory, prepaid expenses and other current assets, accounts payable,accrued expenses and other current and long-term liabilities
                                             
          payments on debt, including adequate protection payments
                                             
          net change in investment of osg
                                             
          contributions by osg
                                             
          increase in cost sharing reimbursement payable to former parent
                                             
          proceeds from disposal of vessels
                                             
          dividend payments to former parent