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Great Lakes Dredge & Dock Quarterly Balance Sheets Chart

Quarterly
 | 
Annual
 
 Goodwill  
 Cash and Cash Eq  
 Account Payables  
 Long-Term Debt  
 Inventory  
20200930 20201231 20210331 20210630 20210930 20211231 20220331 20220630 20220930 20221231 20230331 20230630 20230930 20231231 20240331 20240630 20240930 20241231 20250331 20250630 064.03128.06192.09256.12320.15384.19448.22Milllion

Great Lakes Dredge & Dock Quarterly Balance Sheets Table

Quarterly
 | 
Annual
 
Unit: USD2025-06-30 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 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 
                                                                           
  assets                                                                         
  current assets:                                                                         
  cash and cash equivalents2,925,000 11,336,000 10,216,000 12,037,000 23,134,000 22,802,000 22,841,000 14,093,000 42,066,000 32,519,000 6,546,000 38,833,000 75,420,000 142,583,000 145,459,000 173,838,000 180,767,000 177,708,000 216,510,000 229,725,000 233,527,000 207,474,000 186,995,000 180,855,000 125,575,000 122,986,000 34,458,000 23,127,000 13,538,000 12,736,000 15,852,000 10,469,000 12,643,000 6,895,000 11,167,000 13,595,000 21,236,000 15,894,000 14,184,000 9,421,000 14,696,000 30,619,000  21,088,000 38,067,000 58,695,000 75,338,000 41,322,000 21,623,000 6,643,000 24,440,000 38,324,000 70,791,000 85,618,000 113,288,000 107,050,000 95,997,000 104,529,000 48,478,000 79,031,000 52,802,000 20,925,000 3,250,000 11,939,000 9,624,000 6,287,000 11,523,000 4,790,000 11,532,000     
  accounts receivable—net111,087,000 113,302,000 118,030,000 42,506,000 56,279,000 40,482,000 54,810,000 30,342,000 43,036,000 32,652,000 44,890,000 68,670,000 69,325,000 37,162,000 82,953,000 43,687,000 35,741,000 65,732,000 38,990,000 47,218,000 33,894,000 44,014,000 19,785,000 31,043,000 50,767,000 34,494,000 64,779,000 86,665,000 82,306,000 97,441,000 75,533,000 79,336,000 61,957,000 91,385,000 88,091,000 115,753,000 110,940,000 101,000,000 130,777,000 143,884,000  75,348,000  98,118,000 74,906,000 65,507,000 96,515,000 143,437,000 149,940,000 141,250,000 149,142,000 134,244,000 112,897,000 119,860,000 120,268,000    95,548,000    153,901,000          89,505,000 
  contract revenues in excess of billings59,182,000 78,964,000 74,197,000 91,799,000 70,509,000 68,761,000 68,735,000 49,290,000 43,206,000 81,302,000 65,922,000 61,638,000 62,615,000 74,535,000 39,844,000 33,344,000 34,556,000 28,918,000 32,106,000 20,588,000 20,436,000 37,080,000 22,560,000 25,383,000 31,159,000 16,415,000 17,953,000 36,151,000 55,003,000 55,122,000 90,788,000 82,642,000 90,830,000 75,696,000 95,012,000 75,843,000 74,915,000 74,576,000 81,195,000 66,759,000 116,552,000 102,002,000 -5,677,000 85,628,000 89,070,000 93,061,000 67,432,000 83,759,000 71,842,000 73,916,000 69,574,000 62,146,000 50,889,000 34,420,000 26,412,000 25,735,000 27,120,000 20,897,000 24,842,000 17,662,000 13,137,000 18,431,000 28,004,000 37,576,000 39,727,000 44,780,000 26,510,000 25,650,000 21,939,000 7,360,000 5,575,000 5,823,000 9,561,000 
  inventories26,592,000 26,078,000 29,866,000 34,961,000 31,952,000 32,038,000 33,912,000 32,295,000 32,068,000 28,682,000 29,229,000 27,302,000 31,132,000 30,394,000 30,760,000 30,427,000 32,758,000 33,756,000 34,689,000 32,980,000 30,377,000 29,440,000 30,189,000 27,547,000 27,477,000 26,629,000 28,112,000 32,004,000 32,340,000 33,052,000 34,600,000 35,540,000 35,770,000 38,307,000 37,137,000 35,734,000 35,053,000 35,042,000 35,963,000 37,250,000 34,205,000 32,870,000 120,000 33,194,000 33,643,000 34,707,000 32,500,000 32,321,000 30,578,000 26,629,000 28,726,000 36,511,000 48,696,000 33,595,000 33,426,000 32,398,000 31,464,000 30,767,000 31,734,000 29,979,000 29,494,000 28,791,000 29,192,000 29,550,000 30,131,000 27,457,000 30,776,000 33,879,000 30,156,000 29,596,000 21,509,000 26,647,000 21,082,000 
  prepaid expenses1,721,000 2,288,000 2,828,000 1,441,000 2,258,000 2,025,000 1,486,000    1,568,000    2,017,000    3,091,000    1,525,000    4,710,000    5,183,000    12,407,000    7,924,000        4,211,000    9,554,000    3,979,000 2,703,000 2,787,000 3,433,000 3,448,000 3,049,000 2,854,000 3,080,000 2,644,000 2,850,000 2,218,000 4,654,000 5,282,000 9,530,000 9,173,000    11,810,000 
  other current assets20,465,000 25,652,000 28,281,000 31,988,000 35,134,000 45,070,000 44,544,000    34,686,000    26,399,000    37,307,000    39,658,000    31,907,000    40,228,000    63,412,000    59,690,000        39,953,000    32,254,000    28,405,000 28,747,000 30,580,000 23,592,000 18,919,000 14,568,000 13,302,000 12,607,000 15,445,000 17,108,000 16,471,000 17,898,000 29,089,000 30,635,000 25,539,000    18,648,000 
  total current assets221,972,000 257,620,000 263,418,000 214,732,000 219,266,000 211,178,000 226,328,000 167,935,000 190,358,000 208,590,000 182,841,000 232,779,000 283,120,000 328,042,000 327,432,000 314,417,000 323,152,000 349,677,000 362,693,000 364,731,000 347,836,000 350,308,000 300,712,000 296,454,000 266,712,000 250,667,000 206,698,000 217,358,000 224,134,000 239,284,000 262,184,000 255,971,000 255,399,000 292,121,000 307,226,000 319,266,000 318,251,000 298,497,000 329,733,000 334,185,000 339,775,000 320,482,000  296,468,000 294,700,000 324,204,000 361,053,000 357,706,000 324,186,000 288,917,000 313,690,000 322,224,000 326,205,000 315,046,000 325,778,000 306,677,000 296,100,000 296,961,000 222,969,000 250,541,000 246,556,000 210,186,000 232,436,000 223,156,000 229,694,000 260,314,000 202,143,000 206,249,000 190,929,000 199,868,000 144,927,000 165,358,000 154,246,000 
  property and equipment—net757,924,000 704,026,000 703,252,000 681,552,000 653,283,000 613,116,000 614,608,000 606,288,000 570,178,000 561,757,000 543,910,000 517,839,000 495,220,000 468,555,000 455,102,000 431,856,000 422,552,000 400,723,000 383,042,000 372,847,000 374,327,000 371,884,000 374,596,000 374,798,000 376,635,000 368,600,000 369,863,000 365,491,000 371,807,000 381,762,000 407,294,000 413,612,000 416,058,000 419,268,000 413,008,000 436,691,000 416,484,000 432,749,000 430,210,000 423,157,000  418,839,000  382,331,000 366,271,000 356,986,000 345,620,000 358,350,000 355,854,000 347,740,000 346,540,000 313,383,000 316,460,000 310,810,000 310,520,000    323,231,000    291,157,000          239,337,000 
  operating lease assets71,339,000 83,186,000 96,099,000 66,522,000 74,670,000 81,633,000 88,398,000 72,801,000 79,112,000 85,527,000 89,733,000 86,158,000 77,449,000 63,345,000 62,233,000 52,100,000 52,777,000 57,687,000 65,188,000 66,148,000 71,316,000 81,319,000 72,612,000 72,039,000 74,684,000 76,594,000                                                
  goodwill76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000 76,576,000    76,576,000    83,576,000    83,576,000    83,576,000        79,326,000    100,799,000    98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 98,049,000 97,799,000 97,799,000 96,225,000 97,447,000 97,447,000 97,447,000 98,747,000 
  inventories—noncurrent100,155,000 97,268,000 95,269,000 84,016,000 86,905,000 89,746,000 86,325,000 87,294,000 82,546,000 84,321,000 80,044,000 82,149,000 73,205,000 71,117,000 65,049,000 63,833,000 61,578,000 62,725,000 58,413,000 61,416,000 65,671,000 64,090,000 61,126,000 63,007,000 63,199,000 62,466,000 61,264,000 56,821,000 55,200,000 54,906,000 54,023,000 57,597,000 55,460,000 51,995,000 52,602,000 48,706,000 46,867,000 45,170,000 41,646,000 37,508,000  36,555,000  37,324,000 38,568,000 36,707,000 38,496,000 37,812,000 35,762,000 36,423,000 37,392,000 37,354,000 23,206,000 31,803,000 30,103,000    27,128,000    27,662,000           
  other13,684,000 14,772,000 20,489,000 21,941,000 16,967,000 22,839,000 18,605,000 9,396,000 8,826,000 8,224,000 8,676,000 8,019,000 9,580,000 11,204,000 11,278,000 12,004,000 12,998,000 12,594,000 9,212,000 8,777,000 8,372,000 7,732,000 7,960,000 9,894,000 11,325,000 16,948,000 10,760,000 12,588,000 12,473,000 17,546,000 13,128,000 13,967,000 14,007,000 14,442,000 21,644,000 8,366,000 7,470,000 7,181,000 10,271,000 11,902,000 12,209,000 12,225,000  11,745,000 9,147,000 10,517,000 9,062,000 13,353,000 13,505,000 17,509,000 17,695,000 17,983,000 18,461,000 16,241,000 16,273,000 11,955,000 17,527,000 16,963,000 11,839,000 6,682,000 6,778,000 6,723,000 7,142,000 7,560,000 7,977,000 6,789,000 7,627,000 8,045,000 8,464,000 9,156,000 13,028,000 12,444,000 11,412,000 
  total1,241,650,000 1,233,448,000 1,255,103,000 1,145,339,000 1,127,667,000 1,095,088,000 1,110,840,000 1,020,290,000 1,007,596,000 1,024,995,000 981,780,000 1,003,520,000 1,015,150,000 1,018,839,000 997,670,000 950,786,000 949,633,000 959,982,000 958,024,000 954,465,000 948,068,000 955,879,000 897,552,000 892,768,000 869,131,000 851,851,000 730,271,000 750,306,000 758,205,000 788,258,000 832,357,000 841,691,000 839,488,000 877,627,000 893,588,000 904,134,000 879,909,000 872,502,000 901,625,000 905,971,000 902,249,000 889,349,000  817,198,000 795,336,000 825,790,000 852,645,000 856,423,000 817,354,000 801,013,000 826,395,000 796,686,000 789,960,000 779,601,000 788,460,000 767,818,000 757,334,000 765,811,000 693,825,000 671,198,000 669,355,000 637,018,000 665,426,000 659,329,000 667,394,000 707,642,000 662,224,000 649,626,000 632,351,000    528,359,000 
  liabilities and equity                                                                         
  current liabilities:                                                                         
  accounts payable99,158,000 90,353,000 101,309,000 94,612,000 90,447,000 89,601,000 83,835,000 74,324,000 65,210,000 88,115,000 94,077,000 81,248,000 95,793,000 98,182,000 85,566,000 70,595,000 79,863,000 70,756,000 71,308,000 79,312,000 76,376,000 79,917,000 76,091,000 77,074,000 87,923,000 73,051,000 71,537,000 80,302,000 68,751,000 72,093,000 87,659,000 67,230,000 77,543,000 87,640,000 103,185,000 109,255,000 97,088,000 96,499,000 118,846,000 109,961,000 119,119,000 102,361,000  139,341,000 101,672,000 109,535,000 116,121,000 128,330,000 92,070,000 88,624,000 123,082,000 92,019,000 80,652,000 73,382,000 82,745,000 71,928,000 70,237,000 79,412,000 82,721,000 77,100,000 78,532,000 60,609,000 83,783,000 61,987,000 58,223,000 78,631,000 78,524,000 71,669,000 76,854,000 66,565,000 51,949,000 59,353,000 57,826,000 
  accrued expenses32,896,000 33,349,000 41,640,000 44,062,000 27,892,000 32,484,000 37,361,000 34,464,000 25,815,000 36,548,000 29,469,000 37,667,000 24,717,000 33,949,000 37,626,000 41,020,000 37,230,000 44,017,000 52,899,000 52,112,000 44,938,000 53,898,000 51,225,000 49,891,000 43,837,000 42,633,000 48,351,000 47,411,000 45,943,000 52,284,000 56,218,000 51,996,000 40,727,000 80,781,000 69,043,000 57,365,000 62,179,000 61,596,000 72,277,000 63,978,000 60,884,000 58,034,000  49,755,000 45,079,000 32,251,000 38,531,000 44,146,000 44,973,000 40,561,000 38,490,000 23,905,000 27,477,000 20,932,000 31,121,000 27,688,000 33,911,000 29,685,000 32,809,000 32,628,000 34,965,000 31,661,000 31,265,000 26,703,000 30,864,000 37,966,000 25,143,000 20,635,000 19,641,000 22,052,000 18,764,000 27,385,000 30,192,000 
  operating lease liabilities31,494,000 39,003,000 47,268,000 23,435,000 26,851,000 28,348,000 28,687,000 26,204,000 26,340,000 26,047,000 26,873,000 22,668,000 18,441,000 16,036,000 16,729,000 14,635,000 14,255,000 15,861,000 19,472,000 19,019,000 20,069,000 20,965,000 21,351,000 20,847,000 20,805,000 20,599,000                                                
  billings in excess of contract revenues28,756,000 30,369,000 25,796,000 15,613,000 20,574,000 18,066,000 29,560,000 29,392,000 23,966,000 12,444,000 9,914,000 5,451,000 2,614,000 3,687,000 14,814,000 18,752,000 28,833,000 38,663,000 32,608,000 38,154,000 55,087,000 61,327,000 55,266,000 69,387,000 50,610,000 53,855,000 17,793,000 11,152,000 9,050,000 8,772,000 3,615,000 4,646,000 5,013,000 8,893,000 5,141,000 9,677,000 4,971,000 6,158,000 7,061,000 6,451,000 3,904,000 2,617,000 -2,624,000 4,978,000 12,298,000 4,961,000 6,754,000 4,341,000 7,913,000 9,529,000 11,280,000 20,817,000 19,999,000 23,753,000 13,627,000 15,212,000 12,319,000 16,071,000 14,484,000 19,222,000 27,090,000 24,746,000 24,901,000 23,517,000 22,346,000 22,588,000 7,672,000 10,759,000 9,786,000 8,642,000 17,900,000 23,636,000 19,195,000 
  total current liabilities192,304,000 193,074,000 216,013,000 177,722,000 165,764,000 168,499,000 179,443,000 164,384,000 141,331,000 163,154,000 160,333,000 147,034,000 141,565,000 151,854,000 154,735,000 145,002,000 160,181,000 169,297,000 176,287,000 188,597,000 196,470,000 216,107,000 203,933,000 217,199,000 203,175,000 198,086,000 163,121,000 139,774,000 124,913,000 134,528,000 150,250,000 126,691,000 126,128,000 179,753,000 179,834,000 248,042,000 219,707,000 171,783,000 205,690,000 188,759,000 192,179,000 170,830,000  194,447,000 159,327,000 173,328,000 193,899,000 179,326,000 147,471,000 141,240,000 185,950,000 139,328,000 130,786,000 120,880,000 130,526,000 118,821,000 119,078,000 127,847,000 132,817,000 129,351,000 141,256,000 117,926,000 141,149,000 113,446,000 112,895,000 140,646,000 112,890,000 104,758,000 108,119,000 97,259,000 114,113,000 112,324,000 111,298,000 
  long-term debt419,619,000 413,918,000 448,216,000 412,531,000 411,475,000 382,207,000 412,070,000 321,933,000 321,795,000 321,658,000 321,521,000 321,383,000 321,246,000 321,108,000 320,971,000 320,834,000 320,696,000 323,958,000 323,735,000 323,512,000 323,289,000 323,066,000 322,843,000 322,619,000 322,396,000 322,173,000 321,950,000 321,727,000 321,503,000 321,280,000 333,141,000                                       189,500,000 198,500,000 193,112,000 190,600,000 
  operating lease liabilities—noncurrent40,979,000 45,195,000 50,432,000 44,406,000 49,169,000 54,835,000 61,444,000 48,131,000 54,365,000 60,813,000 65,010,000 64,316,000 59,655,000 47,839,000 45,986,000 37,777,000 38,877,000 42,058,000 45,879,000 47,280,000 51,390,000 60,641,000 51,131,000 50,969,000 53,830,000 55,991,000                                                
  deferred income taxes92,365,000 88,923,000 78,985,000 73,501,000 72,338,000 69,657,000 62,232,000 57,893,000 58,974,000 57,847,000 59,115,000 67,188,000 72,908,000 73,888,000 68,497,000 62,229,000 59,458,000 58,492,000 56,466,000 53,299,000 48,926,000 44,633,000 35,740,000 36,526,000 33,706,000 30,626,000 22,846,000 25,605,000 21,896,000 21,870,000 25,561,000 54,491,000 55,875,000 57,831,000 68,449,000 73,753,000 70,979,000 71,624,000 74,006,000 89,255,000 89,368,000 92,137,000 -14,504,000 90,040,000 104,590,000 107,931,000 108,511,000 106,481,000 105,057,000 103,436,000 106,767,000 104,349,000 102,920,000 103,942,000 104,352,000 99,451,000 92,239,000 91,957,000 92,466,000 83,076,000 79,419,000 80,607,000 81,642,000 84,680,000 81,339,000 83,351,000 84,493,000 82,854,000 81,337,000 82,779,000 83,389,000 82,737,000 84,825,000 
  total liabilities759,781,000 753,504,000 806,193,000 719,930,000 709,644,000 686,048,000 725,292,000 654,321,000 639,074,000 660,973,000 613,560,000 606,614,000 602,962,000 603,435,000 598,673,000 576,006,000 589,536,000 603,372,000 611,356,000 621,566,000 627,066,000 649,250,000 618,153,000 630,944,000 617,653,000 612,574,000 515,343,000 525,871,000 546,691,000 576,756,000 611,061,000 612,967,000 608,690,000 646,099,000 645,698,000 649,557,000 630,674,000 622,613,000 649,452,000 653,888,000 650,081,000 640,796,000  581,644,000 558,826,000 588,090,000 610,544,000 603,904,000 567,554,000 526,428,000 552,970,000 502,934,000 494,359,000 485,805,000 495,923,000 482,472,000 475,833,000 484,574,000 417,000,000 400,491,000 406,543,000 384,054,000 420,877,000 414,348,000 422,906,000 471,293,000 432,720,000 416,874,000 403,752,000 378,694,000 409,030,000 400,617,000 397,832,000 
  commitments and contingencies                                                                         
  equity:                                                                         
  common stock—.0001 par value; 170,000 shares authorized, 67,993 and 67,280 shares issued at june 30, 2025 and december 31, 2024, respectively, and 66,681 and 67,280 shares outstanding at june 30, 2025 and december 31, 2024, respectively.7,000                                                                         
  treasury stock-11,594,000 -3,171,000                        -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,433,000 -1,107,000                                  
  additional paid-in capital323,613,000 322,810,000 322,383,000 320,971,000 319,776,000 318,517,000 317,337,000 315,767,000 314,321,000 312,533,000 312,091,000 310,640,000 308,790,000 307,597,000 308,482,000 307,065,000 304,977,000 303,999,000 304,757,000 305,070,000 304,531,000 302,558,000 302,189,000 301,874,000 299,320,000 296,774,000 295,135,000 292,902,000 291,468,000 290,298,000 289,821,000 289,357,000 288,167,000 287,491,000 286,303,000 286,266,000 285,506,000 284,589,000 283,247,000 282,141,000 280,792,000 279,954,000  277,097,000 275,382,000 275,610,000 275,183,000 274,279,000 272,688,000 272,156,000 271,418,000 270,434,000 269,613,000 268,998,000 267,918,000 267,297,000 266,961,000 266,809,000 266,329,000 265,783,000 264,854,000 263,879,000 263,579,000 263,279,000 262,876,000 262,625,000 262,647,000 262,558,000 260,669,000 260,670,000 200,490,000 169,936,000 168,830,000 
  accumulated retained earnings170,596,000 160,901,000 127,485,000    70,220,000    56,314,000    90,369,000    40,937,000                                                       
  accumulated other comprehensive loss-753,000 -603,000 -965,000 -3,338,000 -677,000 -727,000 -2,015,000  -622,000 -1,600,000              -992,000 -832,000 -1,069,000      -937,000 -2,619,000 -1,907,000 -1,145,000 -1,404,000 -1,426,000 -1,574,000 -1,983,000 -2,128,000 -1,489,000 -1,542,000  -1,061,000 -476,000 -951,000 -473,000 -633,000 -495,000 -369,000                        
  total equity481,869,000 479,944,000 448,910,000 425,409,000 418,023,000 409,040,000 385,548,000 365,969,000 368,522,000 364,022,000 368,220,000 396,906,000 412,188,000 415,404,000 398,997,000 374,780,000 360,097,000 356,610,000 346,668,000 332,899,000 321,002,000 306,629,000 279,399,000 261,824,000 251,478,000 239,277,000 214,928,000 224,435,000 211,514,000 211,502,000 221,296,000 228,724,000 230,798,000 231,528,000 247,890,000 254,577,000 249,235,000 249,889,000 252,173,000 252,083,000 252,168,000 248,553,000  235,554,000 236,510,000 237,700,000 242,101,000 252,519,000 249,800,000 274,585,000 273,425,000 293,752,000 295,601,000 293,796,000 292,537,000 285,346,000 281,501,000 281,237,000 276,825,000 270,707,000 262,812,000 252,964,000 244,549,000 244,981,000 244,488,000 236,349,000        
  common stock—.0001 par value; 170,000 shares authorized, 67,916 and 67,280 shares issued at march 31, 2025 and december 31, 2024, respectively, and 67,564 and 67,280 shares outstanding at march 31, 2025 and december 31, 2024, respectively. 7,000                                                                        
  common stock—.0001 par value; 170,000 shares authorized, 67,280 shares issued and outstanding at december 31, 2024; 90,000 shares authorized, 66,623 shares issued and outstanding at december 31, 2023.  7,000                                                                       
  common stock—.0001 par value; 90,000 authorized, 67,272 and 66,623 shares issued and outstanding at september 30, 2024 and december 31, 2023, respectively.   7,000                                                                      
  retained earnings   107,769,000 98,917,000 91,244,000  48,662,000 54,816,000 53,083,000  87,483,000 97,393,000 101,426,000  65,662,000 51,856,000 49,751,000  30,335,000 19,856,000 10,896,000                         -31,770,000 -20,769,000 -22,217,000 3,024,000 2,591,000 23,650,000 27,043,000 23,858,000 24,042,000 18,468,000   12,261,000               
  common stock—.0001 par value; 90,000 authorized, 67,189 and 66,623 shares issued and outstanding at june 30, 2024 and december 31, 2023, respectively.    7,000                                                                     
  common stock—.0001 par value; 90,000 authorized, 66,941 and 66,623 shares issued and outstanding at march 31, 2024 and december 31, 2023, respectively.     6,000                                                                    
  common stock—.0001 par value; 90,000 authorized, 66,623 and 66,188 shares issued and outstanding at december 31, 2023 and december 31, 2022, respectively.      6,000                                                                   
  prepaid expenses and other current assets       41,915,000 29,982,000 33,435,000  36,336,000 44,628,000 43,368,000  33,121,000 39,330,000 43,563,000  34,220,000 29,602,000 32,300,000  31,626,000 31,734,000 34,392,000  39,411,000 40,947,000 40,933,000  47,984,000 54,199,000 79,838,000  78,341,000 76,107,000 71,985,000  76,871,000 67,730,000 79,643,000 1,780,000 58,440,000 57,310,000 39,461,000  56,867,000 50,203,000 40,479,000  50,999,000 42,932,000 41,553,000                31,452,000 30,557,000 25,592,000  
  revolving credit facility       55,000,000 55,000,000 50,000,000                 11,500,000 30,882,000 70,882,000 91,000,000 95,000,000 90,000,000 86,000,000 115,500,000 104,111,000 60,000,000 45,000,000 35,000,000 20,000,000 28,000,000 18,000,000 20,000,000  35,000,000 35,000,000 37,000,000 35,000,000 45,000,000 41,000,000 21,500,000             11,000,000 30,000,000 41,500,000 60,677,000 49,710,000 42,500,000 29,500,000     
  common stock—.0001 par value; 90,000 authorized, 66,612 and 66,188 shares issued and outstanding at september 30, 2023 and december 31, 2022, respectively.       7,000                                                                  
  accumulated other comprehensive income       1,533,000   -191,000 -1,223,000 5,999,000 6,375,000 140,000 2,047,000 3,258,000 2,854,000 968,000 -2,512,000 -3,391,000 -6,831,000 295,000    -3,809,000 231,000 446,000 630,000 3,000                    -380,000 -547,000 -1,289,000 481,000 3,000 -795,000 109,000 923,000 357,000 212,000 -36,000 421,000 539,000  58,000   2,767,000 668,000 379,000 242,000   
  common stock—.0001 par value; 90,000 authorized, 66,492 and 66,188 shares issued and outstanding at june 30, 2023 and december 31, 2022, respectively.        7,000                                                                 
  common stock—.0001 par value; 90,000 authorized, 66,416 and 66,188 shares issued and outstanding at march 31, 2023 and december 31, 2022, respectively.         6,000                                                                
  common stock—.0001 par value; 90,000 authorized, 66,188 and 65,746 shares issued and outstanding at december 31, 2022 and december 31, 2021, respectively.          6,000                                                               
  common stock—.0001 par value; 90,000 authorized, 66,167 and 65,746 shares issued and outstanding at september 30, 2022 and december 31, 2021, respectively.           6,000                                                              
  common stock—.0001 par value; 90,000 authorized, 66,083 and 65,746 shares issued and outstanding at june 30, 2022 and december 31, 2021, respectively.            6,000                                                             
  common stock—.0001 par value; 90,000 authorized, 66,046 and 65,746 shares issued and outstanding at march 31, 2022 and december 31, 2021, respectively.             6,000                                                            
  common stock—.0001 par value; 90,000 authorized, 65,746 and 65,023 shares issued and outstanding at december 31, 2021 and december 31, 2020, respectively.              6,000                                                           
  common stock—.0001 par value; 90,000 authorized, 65,737 and 65,023 shares issued and outstanding at september 30, 2021 and december 31, 2020, respectively.               6,000                                                          
  common stock—.0001 par value; 90,000 authorized, 65,654 and 65,023 shares issued and outstanding at june 30, 2021 and december 31, 2020, respectively.                6,000                                                         
  common stock—.0001 par value; 90,000 authorized, 65,620 and 65,023 shares issued and outstanding at march 31, 2021 and december 31, 2020, respectively.                 6,000                                                        
  assets held for sale— noncurrent                  2,900,000 3,970,000 3,970,000 3,970,000 3,970,000    5,110,000    8,530,000    9,299,000                                       
  common stock—.0001 par value; 90,000 authorized, 65,023 and 64,283 shares issued and outstanding at december 31, 2020 and december 31, 2019, respectively.                  6,000                                                       
  common stock—.0001 par value; 90,000 authorized, 64,645 and 64,283 shares issued and outstanding at september 30, 2020 and december 31, 2019, respectively.                   6,000                                                      
  common stock—.0001 par value; 90,000 authorized, 64,947 and 64,283 shares issued and outstanding at june 30, 2020 and december 31, 2019, respectively.                    6,000                                                     
  common stock—.0001 par value; 90,000 authorized, 64,795 and 64,283 shares issued and outstanding at march 31, 2020 and december 31, 2019, respectively.                     6,000                                                    
  assets held for sale                         15,751,000 24,779,000                  1,704,000 32,773,000 45,104,000                           
  liabilities held for sale                         7,948,000 13,940,000                   26,581,000 32,493,000                           
  liabilities held for sale— noncurrent                          146,000                                               
  common stock—.0001 par value; 90,000 authorized, 64,283 and 62,830 shares issued; 64,283 and 62,552 outstanding at december 31, 2019 and december 31, 2018, respectively.                      6,000                                                   
  accumulated deficit                      -23,091,000 -39,064,000 -47,016,000 -55,001,000 -74,971,000 -67,271,000 -78,973,000 -77,999,000 -67,101,000 -58,269,000 -53,323,000 -52,629,000 -35,841,000 -28,858,000 -33,418,000 -31,699,000 -27,664,000 -26,829,000 -27,141,000 -29,865,000  -40,488,000 -38,402,000 -36,965,000               -206,000 -10,010,000 -18,336,000           
  contract revenues                      711,518,000 169,775,000 184,811,000 192,637,000 620,795,000 204,322,000 150,590,000 146,593,000 702,503,000 163,317,000 176,859,000 170,586,000 767,585,000 198,869,000 192,192,000 163,119,000 856,878,000 220,802,000 238,877,000 174,557,000  202,198,000 184,709,000 174,382,000 731,418,000 198,826,000 152,863,000 188,847,000 687,584,000 166,763,000 166,532,000 154,907,000 627,333,000 158,468,000 154,959,000 155,338,000 686,922,000 173,333,000 180,135,000 161,400,000            
  costs of contract revenues                      557,761,000 137,942,000 147,325,000 142,760,000 509,335,000 162,188,000 128,350,000 131,888,000 652,620,000 146,622,000 151,085,000 154,404,000 681,197,000 178,824,000 167,936,000 143,129,000 760,955,000 196,717,000 206,590,000 163,875,000  177,739,000 158,506,000 153,475,000 631,123,000 176,510,000 147,682,000 163,064,000 619,185,000 153,743,000 142,643,000 134,885,000 534,316,000 131,077,000 135,193,000 127,638,000 564,140,000 140,638,000 145,546,000 130,916,000            
  gross profit                      153,757,000 31,833,000 37,486,000 49,877,000 111,460,000 42,134,000 22,240,000 14,705,000 49,883,000 16,695,000 25,774,000 16,182,000 86,388,000 20,045,000 24,256,000 19,990,000 95,923,000 24,085,000 32,287,000 10,682,000  24,459,000 26,203,000 20,907,000 100,295,000 22,316,000 5,181,000 25,783,000 68,399,000 13,020,000 23,889,000 20,022,000 93,017,000 27,391,000 19,766,000 27,700,000 122,782,000 32,695,000 34,589,000 30,484,000            
  operating expenses:                                                                         
  general and administrative expenses                      59,110,000 13,488,000 14,613,000 14,825,000 55,108,000 17,293,000 15,169,000 15,944,000 68,331,000 17,522,000 17,267,000 16,795,000 65,533,000 7,187,000 19,751,000 20,089,000 71,069,000 15,277,000 15,543,000 17,948,000  16,062,000 15,918,000 17,870,000 68,039,000 19,219,000 18,311,000 19,187,000 53,459,000 11,667,000 11,456,000 13,267,000 50,434,000 12,736,000 13,622,000 12,089,000 54,352,000 16,535,000 14,266,000 10,960,000            
  proceeds from loss of use claim                      -4,619,000                        -13,372,000  -13,272,000                         
  loss on sale of assets—net                      1,138,000    3,731,000 1,452,000     169,000            16,000 152,000                            
  total operating income                      98,128,000    52,621,000    -23,525,000    14,680,000    22,959,000        51,401,000    15,505,000    54,294,000    68,430,000               
  other income:                                                                         
  interest expense—net                      -27,524,000 -6,335,000 -7,188,000 -7,551,000 -33,578,000 -8,062,000 -8,997,000 -8,660,000 -26,046,000 -6,417,000 -6,441,000 -5,582,000 -22,907,000 -4,819,000 -5,903,000 -5,721,000 -24,365,000 -7,293,000  -5,630,000  -4,702,000 -5,012,000 -5,016,000 -21,941,000 -5,542,000 -5,396,000 -5,733,000 -20,922,000 -5,105,000 -5,383,000 -5,259,000 -21,665,000    -13,542,000               
  equity in loss of joint ventures                              -1,484,000       -115,000  -2,051,000 -2,616,000 -1,098,000   -1,435,000 -1,843,000   -385,000 -590,000   -8,000 -16,000 -406,000  -123,000 -591,000 -614,000  -131,000 -722,000            
  other income                      317,000 -22,000 123,000 172,000 -2,590,000 165,000 -57,000 -2,916,000 -788,000 -266,000 -285,000 208,000 -3,377,000 -637,000 -518,000 -763,000 -1,229,000 706,000 -618,000 -441,000  384,000                              
  total other income                      -27,207,000    -36,168,000    -30,648,000    -28,649,000    -31,645,000        -21,084,000    -20,916,000    -27,498,000    -14,156,000               
  income from continuing operations before income taxes                      70,921,000 12,015,000 15,727,000 27,394,000 16,453,000 15,492,000 -920,000 -12,616,000 -54,173,000 -7,659,000 -2,186,000 -5,997,000 -13,969,000    -8,686,000 1,054,000 5,188,000 -14,427,000  -2,096,000 5,980,000 -3,909,000 30,317,000                           
  income tax benefit                      -15,253,000  -4,230,000 -6,846,000 -5,437,000 -3,790,000 -54,000 3,295,000 35,610,000 2,714,000 1,124,000 2,274,000 5,792,000 -2,850,000 756,000 2,653,000 2,497,000 -742,000 -2,464,000 6,037,000  1,069,000  1,453,000  -684,000 2,244,000 104,000 2,071,000 1,355,000                      
  income from continuing operations                      55,668,000 8,811,000 11,497,000 20,548,000 11,016,000 11,702,000 -974,000 -9,321,000 -18,563,000 -4,945,000 -1,062,000 -3,723,000 -8,177,000    -6,189,000 312,000 2,724,000 -8,390,000 20,718,000 -1,027,000 3,883,000 -2,456,000 19,857,000                           
  income from discontinued operations, net of income taxes                      -6,329,000 -859,000 -3,251,000 -3,380,000 -17,309,000    -12,697,000  368,000 -13,065,000         -10,423,000 -1,059,000 -5,320,000 -2,739,000 -54,850,000                           
  net income                      49,339,000 7,952,000 8,246,000 17,168,000 -6,293,000 11,702,000 -974,000 -9,321,000 -31,260,000 -4,945,000 -694,000 -16,788,000 -8,177,000 4,560,000 -1,719,000 -4,035,000 -6,189,000 312,000 2,724,000 -8,390,000 10,295,000 -2,086,000 -1,437,000 -5,195,000 -34,993,000 1,266,000 -25,188,000 411,000 -3,340,000 -2,152,000 4,346,000 953,000 17,251,000 5,659,000 2,168,000 2,398,000 33,720,000 7,721,000 10,334,000 9,233,000            
  basic earnings per share attributable to income from continuing operations                      880    180        -130    -100        330                           
  basic loss per share attributable to loss on discontinued operations, net of income taxes                      -100    -280    -210                                           
  basic earnings per share                      780 120 130 280  190    -80   -130 80 -30    50                                 
  basic weighted-average shares                      63,597,000 63,861,000 63,605,000 62,882,000 62,236,000 62,358,000 62,267,000 61,815,000 61,365,000 61,462,000 61,342,000 61,065,000 60,744,000 60,811,000 60,711,000 60,507,000 60,410,000 60,496,000 60,473,000 60,265,000  60,040,000 59,863,000 59,708,000 59,495,000 59,526,000 59,436,000 59,369,000 59,195,000 59,253,000 59,171,000 59,038,000 58,891,000 58,930,000 58,875,000 58,785,000 58,647,000 58,698,000 58,602,000 58,548,000            
  diluted earnings per share attributable to income from continuing operations                      860    170        -130    -100        330                           
  diluted loss per share attributable to loss on discontinued operations, net of income taxes                      -100    -270    -210                                           
  diluted earnings per share                      760 120 130 270  180    -80   -130 80 -30    50                                 
  diluted weighted-average shares                      65,042,000 65,071,000 64,990,000 64,569,000 63,607,000 63,260,000 62,267,000 61,815,000 61,365,000 61,462,000 61,342,000 61,065,000 60,744,000 61,526,000 60,711,000 60,507,000 60,410,000 60,841,000 60,924,000 60,265,000  60,040,000 60,538,000 59,708,000 60,101,000 60,082,000 59,436,000 60,017,000 59,195,000 59,253,000 59,534,000 59,434,000 59,230,000 59,161,000 59,184,000 59,237,000 58,871,000 58,901,000 58,781,000 58,703,000            
  goodwill and other intangible assets—net                       76,576,000 76,576,000 76,576,000  84,038,000 84,186,000 84,334,000  84,631,000 84,779,000 84,927,000  85,314,000 85,544,000 85,774,000  86,900,000  93,522,000  80,885,000 81,031,000 81,047,000  81,684,000 81,975,000 103,967,000  98,666,000 98,729,000 98,793,000                    
  common stock—.0001 par value; 90,000 authorized, 63,916 and 62,830 shares issued; 63,916 and 62,552 shares outstanding at september 30, 2019 and december 31, 2018, respectively.                       6,000                                                  
  (gain) loss on sale of assets—net                       -27,000 81,000 279,000   -1,063,000 -199,000 5,077,000 175,000  11,000 6,175,000 -2,000 687,000  -855,000 -884,000  -8,000  390,000     58,000 2,000                        
  operating income                       18,372,000 22,792,000 34,773,000  23,389,000 8,134,000 -1,040,000  -1,002,000 8,338,000 -624,000  12,860,000 3,818,000 -89,000  9,692,000 13,989,000 -7,258,000  8,007,000 10,269,000 2,885,000  6,243,000 -21,390,000 6,594,000  1,461,000 12,526,000 6,786,000  14,786,000 8,657,000 15,611,000  16,055,000 20,215,000 19,414,000            
  income tax provision                       -3,204,000                     -2,097,000  -10,460,000      -2,768,000 -564,000  -3,618,000 -1,455,000 -1,527,000  -5,113,000 -6,755,000 -6,239,000            
  basic earnings per share attributable to continuing operations                       140 180 330  190    -80         50   -10 60 -40                            
  basic loss per share attributable to discontinued operations, net of tax                       -20 -50 -50        -210          -20 -80 -50                            
  diluted earnings per share attributable to continuing operations                       140 180 320  180    -80         50   -10 60 -40                            
  diluted loss per share attributable to discontinued operations, net of tax                       -20 -50 -50        -210          -20 -80 -50                            
  common stock—.0001 par value; 90,000 authorized, 63,769 and 62,830 shares issued; 63,769 and 62,552 shares outstanding at june 30, 2019 and december 31, 2018, respectively.                        6,000                                                 
  common stock—.0001 par value; 90,000 authorized, 63,600 and 62,830 shares issued; 63,323 and 62,552 shares outstanding at march 31, 2019 and december 31, 2018, respectively.                         6,000                                                
  current portion of long-term debt                           909,000 1,169,000 1,379,000 2,758,000                                          4,085,000 
  common stock—.0001 par value; 90,000 authorized, 62,830 and 61,897 shares issued; 62,552 and 61,619 outstanding at december 31, 2018 and december 31, 2017, respectively.                          6,000                                               
  loss on extinguishment of debt                              -2,330,000  -2,330,000                      -5,145,000   -5,145,000                
  basic loss per share                          -100  -20 -150 -510  -20 -270    -70    -140                                
  diluted loss per share                          -100  -20 -150 -510  -20 -270    -70    -140                                
  investments in joint ventures                           5,164,000 3,489,000 1,963,000 2,714,000 7,344,000 4,794,000 5,756,000 4,734,000 5,791,000 5,293,000 3,131,000 3,761,000 12,319,000 5,859,000 7,726,000  8,445,000 5,619,000 7,055,000 8,256,000 7,518,000 6,072,000 6,457,000 7,047,000 7,076,000 6,899,000 6,908,000 6,923,000 7,221,000 6,615,000 6,738,000 7,329,000 7,171,000 7,090,000 7,221,000 7,943,000 7,926,000 7,764,000 8,143,000 9,339,000 9,528,000 9,473,000 10,285,000 10,145,000 10,008,000 9,996,000 
  assets held for sale—noncurrent                           8,846,000 6,916,000 8,463,000  8,569,000 8,991,000 9,118,000            9,274,000 8,856,000                           
  common stock—.0001 par value; 90,000 authorized, 62,730 and 61,897 shares issued; 62,452 and 61,619 shares outstanding at september 30, 2018 and december 31, 2017, respectively.                           6,000                                              
  equity in earnings of joint ventures                               26,000 -1,468,000 1,000 -2,365,000 6,000 128,000  -6,051,000    -2,895,000 -5,785,000   1,208,000 1,427,000   124,000 177,000    606,000    81,000              
  common stock—.0001 par value; 90,000 authorized, 62,583 and 61,897 shares issued; 62,305 and 61,619 shares outstanding at june 30, 2018 and december 31, 2017, respectively.                            6,000                                             
  basic loss per share attributable to continuing operations                            -20 -150   -20 -60        -140                                
  diluted loss per share attributable to continuing operations                            -20 -150   -20 -60        -140                                
  common stock—.0001 par value; 90,000 authorized, 62,485 and 61,897 shares issued; 62,207 and 61,619 shares outstanding at march 31, 2018 and december 31, 2017, respectively.                             6,000                                            
  other intangible assets — net                              908,000    1,499,000    2,428,000        1,976,000    3,232,000     1,340,000 1,987,000 2,633,000  714,000 819,000 927,000  1,230,000 1,423,000 1,616,000 1,063,000 1,240,000 940,000     
  common stock—.0001 par value; 90,000 authorized, 61,897 and 61,240 shares issued; 61,619 and 60,962 outstanding at december 31, 2017 and december 31, 2016, respectively.                              6,000                                           
  impairment of goodwill                                      2,750,000  2,750,000        21,474,000                         
  basic loss per share attributable to income from continuing operations                              -300                                           
  diluted loss per share attributable to income from continuing operations                              -300                                           
  current portion of long term debt                               2,819,000 2,845,000 2,439,000 2,465,000 11,745,000 10,469,000 7,530,000 7,506,000 8,369,000 8,272,000 7,818,000  373,000 278,000   2,509,000 2,515,000 2,526,000 13,098,000 2,587,000 2,658,000 2,813,000                    
  8% senior notes                               320,834,000 320,614,000                                         
  7 3/8% senior notes                                 273,248,000 272,998,000 272,748,000 272,498,000 272,248,000 274,909,000 274,902,000  274,887,000  250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000 250,000,000                
  notes payable                               12,392,000 12,696,000 12,995,000 13,293,000 45,012,000 47,821,000 52,265,000 54,382,000 52,108,000 53,880,000 62,393,000                                
  common stock—.0001 par value; 90,000 authorized, 61,853 and 61,240 shares issued; 61,576 and 60,962 shares outstanding at september 30, 2017 and december 31, 2016, respectively.                               6,000                                          
  common stock—.0001 par value; 90,000 authorized, 61,683 and 61,240 shares issued; 61,405 and 60,962 shares outstanding at june 30, 2017 and december 31, 2016, respectively.                                6,000                                         
  common stock—.0001 par value; 90,000 authorized, 61,550 and 61,240 shares issued; 61,272 and 60,962 shares outstanding at march 31, 2017 and december 31, 2016, respectively.                                 6,000                                        
  common stock—.0001 par value; 90,000 authorized, 61,240 and 60,709 shares issued; 60,962 and 60,431 outstanding at december 31, 2016 and december 31, 2015, respectively.                                  6,000                                       
  gain on bargain purchase acquisition                                          -2,197,000  2,197,000                             
  common stock—.0001 par value; 90,000 authorized, 61,215 and 60,709 shares issued; 60,937 and 60,431 shares outstanding at september 30, 2016 and december 31, 2015, respectively.                                   6,000                                      
  income before income taxes                                   7,410,000 -2,475,000 -6,688,000          1,950,000 -27,432,000 307,000 -5,411,000 -3,507,000 7,114,000 1,517,000 26,796,000 9,277,000 3,623,000 3,925,000 54,274,000 12,834,000 17,089,000 15,472,000            
  common stock—.0001 par value; 90,000 authorized, 61,026 and 60,709 shares issued; 60,748 and 60,431 shares outstanding at june 30, 2016 and december 31, 2015, respectively.                                    6,000                                     
  common stock—.0001 par value; 90,000 authorized, 60,934 and 60,709 shares issued; 60,656 and 60,431 shares outstanding at march 31, 2016 and december 31, 2015, respectively.                                     6,000                                    
  gain on sale of assets—net                                     -10,000         -5,773,000 -3,146,000   -565,000 -108,000 -93,000 -31,000 -11,711,000                   
  common stock—.0001 par value; 90,000 authorized, 60,709 and 60,170 shares issued; 60,431 and 60,170 outstanding at december 31, 2015 and december 31, 2014, respectively.                                      6,000                                   
  net income attributable to noncontrolling interest                                                                         
  net income attributable to common stockholders of great lakes dredge & dock corporation                                      -6,189,000     -2,086,000 -1,437,000 -5,195,000 -34,361,000    -2,695,000    16,528,000    34,609,000               
  basic earnings per share attributable to common stockholders of great lakes dredge & dock corporation                                      -100        -580                           
  diluted earnings per share attributable to common stockholders of great lakes dredge & dock corporation                                      -100        -570                           
  common stock—.0001 par value; 90,000 authorized, 60,447 and 60,170 shares issued and outstanding at september 30, 2015 and december 31, 2014, respectively.                                       6,000                                  
  accounts receivable — net                                        106,592,000               110,044,000 108,152,000 113,743,000  106,252,000 134,967,000 126,352,000  124,133,000 131,523,000 159,238,000 98,963,000 101,765,000 92,590,000     
  property and equipment — net                                        418,308,000               311,588,000 309,296,000 316,376,000  282,012,000 284,526,000 286,307,000  289,955,000 289,956,000 293,866,000 309,040,000 305,189,000 304,744,000     
  goodwill and other intangible assets — net                                        89,014,000                                 
  inventories — noncurrent                                        37,084,000               30,988,000 27,760,000 28,091,000  26,029,000 25,537,000 27,605,000  31,453,000 32,531,000 38,865,000 35,213,000 21,576,000 21,576,000     
  7 3⁄8% senior notes                                        274,895,000                                 
  common stock — .0001 par value; 90,000 authorized, 60,521 and 60,170 shares issued and outstanding at june 30, 2015 and december 31, 2014, respectively.                                        6,000                                 
  (gain) loss on sale of assets — net                                        5,000                                 
  interest expense — net                                        -5,567,000                                 
  common stock—.0001 par value; 90,000 authorized, 60,379 and 60,170 shares issued and outstanding at march 31, 2015 and december 31, 2014, respectively.                                         6,000                                
  operating activities:                                                                         
  adjustments to reconcile net income to net cash flows used in operating activities:                                                                         
  depreciation and amortization                                          50,129,000                               
  cash distributions from joint ventures                                          19,955,000                               
  (gain) loss on dispositions of property and equipment                                          732,000                               
  gain on adjustment of contingent earnout                                          -1,086,000                               
  amortization of deferred financing fees                                          1,453,000                               
  unrealized foreign currency (gain) loss                                          593,000                               
  unrealized net income from mark-to-market valuations of derivatives                                          3,029,000                               
  share-based compensation expense                                          2,694,000                               
  excess income tax benefit from share-based compensation                                          -206,000                               
  changes in assets and liabilities:                                                                         
  accounts receivable                                          11,012,000                           101,750,000 86,151,000 107,010,000  
  accounts payable and accrued expenses                                          -14,113,000                               
  other noncurrent assets and liabilities                                          -1,759,000                               
  net cash flows from operating activities of continuing operations                                          67,154,000                               
  net cash flows used in by operating activities of discontinued operations                                          -18,352,000                               
  cash from operating activities                                          48,802,000                               
  investing activities:                                                                         
  purchases of property and equipment                                          -91,910,000                               
  proceeds from dispositions of property and equipment                                          68,000                               
  proceeds from                                          -3,100,000                               
  payments for acquisitions of businesses, net of cash acquired                                          -27,048,000                               
  net cash flows used in investing activities of continuing operations                                          -121,990,000                               
  net cash flows from investing activities of discontinued operations                                          5,275,000                               
  cash from investing activities                                          -116,715,000                               
  financing activities:                                                                         
  proceeds from term loan facility                                          47,360,000                               
  repayments of term loan facility                                          -417,000                               
  proceeds from issuance of 7 3/8% senior notes                                          24,880,000                               
  deferred financing fees                                          -2,532,000                               
  repayment of long term note payable                                                                         
  distributions paid to minority interests                                                                         
  dividends paid                                                                         
  dividend equivalents paid on restricted stock units                                                                         
  taxes paid on settlement of vested share awards                                          -497,000                               
  purchase of noncontrolling interest                                          -205,000                               
  repayments of equipment debt                                          -235,000                               
  exercise of stock options and purchases from employee stock plans                                          1,568,000                               
  borrowings under revolving loans                                          236,500,000                               
  repayments of revolving loans                                          -271,500,000                               
  cash from financing activities of continuing operations                                          35,128,000                               
  cash from financing activities of discontinued operations                                                                         
  cash from financing activities                                          35,128,000                               
  effect of foreign currency exchange rates on cash and cash equivalents                                          -164,000                               
  net increase in cash and cash equivalents                                          -32,949,000                               
  cash and cash equivalents at beginning of period                                          75,338,000                               
  cash and cash equivalents at end of period                                          42,389,000                               
  supplemental cash flow information                                                                         
  cash paid for interest                                          18,901,000                               
  cash paid (refunded) for income taxes                                          -10,544,000                               
  non-cash investing and financing activities                                                                         
  property and equipment purchased but not yet paid                                          10,316,000                               
  property and equipment purchased on capital leases and equipment notes                                          3,665,000                               
  purchase price of magnus assets comprised of promissory notes and other liabilities                                          16,210,000                               
  purchase price of terra assets comprised of promissory notes and other liabilities                                                                         
  long term note payable                                           485,000        2,500,000 2,500,000 2,500,000 2,500,000 5,000,000 5,000,000 5,000,000 5,000,000               
  liabilities held for sale—noncurrent                                             707,000 1,212,000                           
  common stock—.0001 par value; 90,000 authorized, 60,136 and 59,670 shares issued and outstanding at september 30, 2014 and december 31, 2013, respectively                                           6,000                              
  total great lakes dredge & dock corporation equity                                           235,554,000 236,510,000 237,700,000 242,946,000 252,883,000 249,982,000 274,817,000 273,635,000 293,543,000 295,373,000 293,343,000 291,969,000 284,976,000 281,188,000 281,386,000 278,953,000 272,477,000 264,618,000 254,296,000            
  noncontrolling interests                                              -845,000 -364,000 -182,000 -232,000 -210,000 209,000 228,000 453,000 568,000 370,000 313,000 -149,000 -2,128,000 -1,770,000 -1,806,000 -1,332,000 -1,239,000 64,000 604,000 631,000        
  basic earnings per share attributable to great lakes dredge & dock corporation                                           -30  -90  20 -420 10 -50 -40 70 20 280 100 30 40 590 130 180 160            
  diluted earnings per share attributable to great lakes dredge & dock corporation                                           -30  -90  20 -420 10 -50 -40 70 20 280 90 30 40 590 130 180 160            
  common stock—.0001 par value; 90,000 authorized, 59,955 and 59,670 shares issued and outstanding at june 30, 2014 and december 31, 2013, respectively                                            6,000                             
  gain on foreign currency transactions—net                                            -39,000 65,000    36,000    6,000                    
  basic loss per share attributable to great lakes dredge & dock corporation                                            -20                             
  diluted loss per share attributable to great lakes dredge & dock corporation                                            -20                             
  common stock—.0001 par value; 90,000 authorized, 59,784 and 59,670 shares issued and outstanding at march 31, 2014 and december 31, 2013, respectively                                             6,000                            
  common stock—.0001 par value; 90,000 authorized, 59,670 and 59,359 shares issued and outstanding at december 31, 2013 and december 31, 2012, respectively.                                              6,000                           
  loss on foreign currency transactions—net                                              -351,000 -178,000 -261,000  -118,000 -40,000 -21,000  -282,000                   
  net (income) loss attributable to noncontrolling interest                                              632,000                           
  basic earnings per share attributable to loss on discontinued operations, net of income taxes                                              -910                           
  diluted earnings per share attributable to loss on discontinued operations, net of income taxes                                              -900                           
  common stock—.0001 par value; 90,000 authorized, 59,625 and 59,359 shares issued and outstanding at september 30, 2013 and december 31, 2012, respectively.                                               6,000                          
  net income attributable to noncontrolling interests                                               182,000  22,000           474,000 93,000            
  net income attributable to great lakes dredge & dock corporation                                               1,448,000 -25,241,000 433,000  -2,132,000 4,437,000 1,068,000  5,602,000 1,706,000 2,392,000  7,685,000 10,808,000 9,326,000            
  dividends declared per share                                                   20 20 20  20 20 20  20 20 20            
  common stock—.0001 par value; 90,000 authorized, 59,471 and 59,359 shares issued and outstanding at june 30, 2013 and december 31, 2012, respectively                                                6,000                         
  net (income) loss attributable to noncontrolling interests                                                -53,000  645,000 20,000 91,000 115,000 -723,000 -57,000 -462,000 -6,000 889,000 -36,000              
  common stock—.0001 par value; 90,000 authorized, 59,391 and 59,359 shares issued and outstanding at march 31, 2013 and december 31, 2012, respectively.                                                 6,000                        
  common stock—.0001 par value; 90,000 authorized, 59,359 and 58,999 shares issued and outstanding at december 31, 2012 and december 31, 2011, respectively.                                                  6,000                       
  common stock—.0001 par value; 90,000,000 authorized, 59,274,393 and 58,999,404 shares issued and outstanding at september 30, 2012 and december 31, 2011, respectively.                                                   6,000                      
  common stock—.0001 par value; 90,000,000 authorized, 59,220,422 and 58,999,404 shares issued and outstanding at june 30, 2012 and december 31, 2011, respectively.                                                    6,000                     
  common stock—.0001 par value; 90,000,000 authorized, 59,110,847 and 58,999,404 shares issued and outstanding at march 31, 2012 and december 31, 2011, respectively.                                                     6,000                    
  other intangible assets—net                                                      814,000    3,280,000    1,037,000          1,268,000 
  current portion of note payable                                                      2,500,000 2,500,000 2,500,000 2,500,000 2,500,000               
  current portion of equipment debt                                                      533,000 1,493,000 111,000 179,000 303,000 401,000 669,000 910,000 1,200,000 1,239,000 1,462,000 1,461,000 1,551,000 1,695,000 1,838,000     
  7 3/4% senior subordinated notes                                                           175,000,000  175,000,000  175,000,000 175,000,000 175,000,000 175,000,000 175,000,000 175,000,000     
  common stock—.0001 par value; 90,000,000 authorized, 58,999,404 and 58,770,369 shares issued and outstanding at december 31, 2011 and december 31, 2010, respectively.                                                      6,000                   
  income tax expense                                                      -9,545,000    -20,554,000               
  common stock—.0001 par value; 90,000,000 authorized, 58,960,444 and 58,770,369 shares issued and outstanding at september 30, 2011 and december 31, 2010, respectively.                                                       6,000                  
  gain on sale of assets                                                       -131,000 -2,513,000                 
  interest expense                                                       -5,571,000 -4,911,000 -5,950,000  -3,302,000 -2,995,000 -3,220,000            
  loss on foreign currency transactions                                                       -544,000                  
  common stock—.0001 par value; 90,000,000 authorized, 58,915,249 and 58,770,369 shares issued and outstanding at june 30, 2011 and december 31, 2010, respectively.                                                        6,000                 
  accumulated earnings                                                        14,112,000 13,648,000  6,476,000              
  common stock—.0001 par value; 90,000,000 authorized, 58,813,584 and 58,770,369 shares issued and outstanding at march 31, 2011 and december 31, 2010, respectively.                                                         6,000                
  7.75% senior subordinated notes                                                          175,000,000    175,000,000           
  equity                                                                         
  common stock—0.0001 par value; authorized, 90,000,000 shares; issued and outstanding, 58,770,369 shares and 58,542,038 shares at december 31, 2010 and 2009, respectively                                                          6,000               
  common stock—.0001 par value; 90,000,000 authorized, 58,721,624 and 58,542,038 shares issued and outstanding at september 30, 2010 and december 31, 2009, respectively                                                           6,000              
  amortization of intangible assets                                                           105,000 108,000 110,000            
  7 3/4 % senior subordinated notes                                                            175,000,000             
  common stock—.0001 par value; 90,000,000 authorized, 58,671,956 and 58,542,038 shares issued and outstanding at june 30, 2010 and december 31, 2009, respectively.                                                            6,000             
  common stock — .0001 par value; 90,000,000 authorized, 58,559,894 and 58,542,038 shares issued and outstanding at march 31, 2010 and december 31, 2009, respectively.                                                             6,000            
  common stock—0.0001 par value; authorized, 90,000,000 shares; issued and outstanding, 58,542,038 shares and 58,484,242 shares at december 31, 2009 and 2008, respectively                                                              6,000           
  total great lakes dredge & dock corporation stockholders’ equity                                                              245,788,000 244,917,000 243,884,000 235,718,000        
  stockholders’ equity:                                                                         
  common stock—.0001 par value; 90,000,000 authorized, 58,509,912 and 58,484,242 shares issued and outstanding at september 30, 2009 and december 31, 2008, respectively.                                                               6,000          
  stockholders’ equity                                                                         
  common stock—.0001 par value; 90,000,000 authorized, 58,504,542 and 58,484,242 shares issued and outstanding at june 30, 2009 and december 31, 2008, respectively.                                                                6,000         
  common stock—.0001 par value; 90,000,000 authorized, 58,496,697 and 58,484,242 shares issued and outstanding at march 31, 2009 and december 31, 2008, respectively.                                                                 6,000        
  liabilities and stockholders’ equity                                                                         
  minority interest                                                                  468,000 468,000 2,239,000 2,002,000 2,024,000 2,014,000 2,005,000 
  common stock—.0001 par value; 90,000,000 authorized, 58,478,829 and 58,459,824 shares issued and outstanding at september 30, 2008 and december 31, 2007, respectively.                                                                  6,000       
  total stockholders’ equity                                                                  229,036,000 232,284,000 226,360,000 225,469,000 164,509,000  128,522,000 
  common stock—.0001 par value; 90,000,000 authorized, 58,466,754 shares issued and outstanding at june 30, 2008 and december 31, 2007                                                                   6,000      
  common stock—.0001 par value; 90,000,000 authorized, 58,459,824 shares issued and outstanding at march 31, 2008 and december 31, 2007                                                                    6,000     
  cash and equivalents                                                                     29,710,000 1,135,000 286,000 3,640,000 
  property and equipment                                                                     268,899,000 293,339,000 237,450,000  
  other intangible assets                                                                     1,071,000 1,137,000 1,203,000  
  other assets                                                                     9,869,000 10,134,000 9,587,000  
  total assets                                                                     606,165,000 575,563,000 534,442,000  
  current maturities of long-term debt                                                                      25,500,000 1,950,000  
  common stock—.0001 par value; 90,000,000 authorized, 58,459,824 shares issued and outstanding and 39,985,678 shares issued and outstanding at september 30, 2007 and december 31, 2006, respectively                                                                     5,000    
  total liabilities and stockholders’ equity                                                                     606,165,000 575,563,000   
  common stock—.0001 par value; 90,000,000 authorized, 46,423,746 shares issued and outstanding at june 30, 2007 and 39,985,678 shares issued and outstanding at december 31, 2006                                                                      5,000   
  liabilities and stockholders' equity                                                                         
  stockholders' equity:                                                                         
  common stock—.0001 par value; 90,000,000 authorized, 40,327,289 shares issued and outstanding                                                                       4,000  
  total stockholders' equity                                                                       131,811,000  
  total liabilities and stockholders' equity                                                                       534,442,000  
  inventories - non current                                                                        13,353,000 
  redeemable preferred stock                                                                         
  common stock—.0001 par value; 90,000,000 authorized, 39,985,678 shares issued and outstanding                                                                        4,000 
  common stock—.01 par value; 1,000,000 shares issued and outstanding                                                                         

We provide you with 20 years of balance sheets for Great Lakes Dredge & Dock stock, allowing you to gain comprehensive visibility into the fundamentals of the company. Our detailed breakdowns include key financial metrics such as asset and liabilities, payables and receivables, long debts and short debts, cash and inventories, expenses and profits. This in-depth information is essential for making informed investment decisions and understanding the financial health and performance of Great Lakes Dredge & Dock. Explore the full financial landscape of Great Lakes Dredge & Dock stock with our expertly curated balance sheets.

The information provided in this report about Great Lakes Dredge & Dock stock is taken from www.sec.gov and many other data providers. While we have conducted our best efforts to ensure that the parsed data is accurate, we cannot guarantee its accuracy. Please use caution and understand that any consequences of its use are your own responsibility.