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| 0000950170-22-020844-index.html | 2022-11-01 16:12:15 | |
| 0000950170-22-020844.txt | 2022-11-01 16:12:15 | |
 0000950170-22-020844-xbrl.zip | 193462 | 2022-11-01 16:12:15 |
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| gldd-20220930.htm | 2462016 | 2022-11-01 16:12:15 |
| gldd-20220930.xsd | 37689 | 2022-11-01 16:12:15 |
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| gldd-ex31_2.htm | 16827 | 2022-11-01 16:12:15 |
| gldd-ex32_1.htm | 10049 | 2022-11-01 16:12:15 |
| gldd-ex32_2.htm | 9936 | 2022-11-01 16:12:15 |
 img151411916_0.jpg | 20289 | 2022-11-01 16:12:15 |
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| R9.htm | 9850 | 2022-11-01 16:12:15 |
| report.css | 2767 | 2022-11-01 16:12:15 |
| Show.js | 1085 | 2022-11-01 16:12:15 |