Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000950170-24-054684-index-headers.html | 2024-05-07 16:55:26 | |
| 0000950170-24-054684-index.html | 2024-05-07 16:55:26 | |
| 0000950170-24-054684.txt | 2024-05-07 16:55:26 | |
 0000950170-24-054684-xbrl.zip | 169350 | 2024-05-07 16:55:26 |
| FilingSummary.xml | 26930 | 2024-05-07 16:55:26 |
| Financial_Report.xlsx | 63215 | 2024-05-07 16:55:26 |
| gldd-20240331.htm | 1196165 | 2024-05-07 16:55:26 |
| gldd-20240331.xsd | 838222 | 2024-05-07 16:55:26 |
| gldd-20240331_htm.xml | 818779 | 2024-05-07 16:55:26 |
| gldd-ex31_1.htm | 12540 | 2024-05-07 16:55:26 |
| gldd-ex31_2.htm | 12540 | 2024-05-07 16:55:26 |
| gldd-ex32_1.htm | 7539 | 2024-05-07 16:55:26 |
| gldd-ex32_2.htm | 7501 | 2024-05-07 16:55:26 |
 img153253193_0.jpg | 20289 | 2024-05-07 16:55:26 |
| MetaLinks.json | 665533 | 2024-05-07 16:55:26 |
| R1.htm | 53130 | 2024-05-07 16:55:26 |
| R10.htm | 13061 | 2024-05-07 16:55:26 |
| R11.htm | 15105 | 2024-05-07 16:55:26 |
| R12.htm | 35316 | 2024-05-07 16:55:26 |
| R13.htm | 32249 | 2024-05-07 16:55:26 |
| R14.htm | 24150 | 2024-05-07 16:55:26 |
| R15.htm | 108486 | 2024-05-07 16:55:26 |
| R16.htm | 10564 | 2024-05-07 16:55:26 |
| R17.htm | 113617 | 2024-05-07 16:55:26 |
| R18.htm | 13713 | 2024-05-07 16:55:26 |
| R19.htm | 12655 | 2024-05-07 16:55:26 |
| R2.htm | 105873 | 2024-05-07 16:55:26 |
| R20.htm | 31572 | 2024-05-07 16:55:26 |
| R21.htm | 31312 | 2024-05-07 16:55:26 |
| R22.htm | 94061 | 2024-05-07 16:55:26 |
| R23.htm | 106727 | 2024-05-07 16:55:26 |
| R24.htm | 14084 | 2024-05-07 16:55:26 |
| R25.htm | 34318 | 2024-05-07 16:55:26 |
| R26.htm | 9294 | 2024-05-07 16:55:26 |
| R27.htm | 20051 | 2024-05-07 16:55:26 |
| R28.htm | 65023 | 2024-05-07 16:55:26 |
| R29.htm | 26992 | 2024-05-07 16:55:26 |
| R3.htm | 12048 | 2024-05-07 16:55:26 |
| R30.htm | 38657 | 2024-05-07 16:55:26 |
| R31.htm | 17350 | 2024-05-07 16:55:26 |
| R32.htm | 31844 | 2024-05-07 16:55:26 |
| R33.htm | 25186 | 2024-05-07 16:55:26 |
| R34.htm | 21450 | 2024-05-07 16:55:26 |
| R35.htm | 22224 | 2024-05-07 16:55:26 |
| R36.htm | 20220 | 2024-05-07 16:55:26 |
| R37.htm | 16624 | 2024-05-07 16:55:26 |
| R38.htm | 20605 | 2024-05-07 16:55:26 |
| R39.htm | 12129 | 2024-05-07 16:55:26 |
| R4.htm | 69029 | 2024-05-07 16:55:26 |
| R40.htm | 36185 | 2024-05-07 16:55:26 |
| R5.htm | 22590 | 2024-05-07 16:55:26 |
| R6.htm | 4694 | 2024-05-07 16:55:26 |
| R7.htm | 48744 | 2024-05-07 16:55:26 |
| R8.htm | 90680 | 2024-05-07 16:55:26 |
| R9.htm | 15081 | 2024-05-07 16:55:26 |
| report.css | 2767 | 2024-05-07 16:55:26 |
| Show.js | 1085 | 2024-05-07 16:55:26 |