Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-17-008350-index-headers.html | 2017-05-03 16:03:34 | |
| 0001564590-17-008350-index.html | 2017-05-03 16:03:34 | |
| 0001564590-17-008350.txt | 2017-05-03 16:03:34 | |
 0001564590-17-008350-xbrl.zip | 169718 | 2017-05-03 16:03:34 |
| FilingSummary.xml | 35309 | 2017-05-03 16:03:34 |
| Financial_Report.xlsx | 66126 | 2017-05-03 16:03:34 |
 g201705031945244803714.jpg | 4002 | 2017-05-03 16:03:34 |
| gldd-10q_20170331.htm | 3243857 | 2017-05-03 16:03:34 |
| gldd-20170331.xml | 4393950 | 2017-05-03 16:03:34 |
| gldd-20170331.xsd | 46717 | 2017-05-03 16:03:34 |
| gldd-20170331_cal.xml | 68685 | 2017-05-03 16:03:34 |
| gldd-20170331_def.xml | 167838 | 2017-05-03 16:03:34 |
| gldd-20170331_lab.xml | 339501 | 2017-05-03 16:03:34 |
| gldd-20170331_pre.xml | 314176 | 2017-05-03 16:03:34 |
| gldd-ex101_173.htm | 129197 | 2017-05-03 16:03:34 |
| gldd-ex102_172.htm | 76303 | 2017-05-03 16:03:34 |
| gldd-ex311_10.htm | 15732 | 2017-05-03 16:03:34 |
| gldd-ex312_6.htm | 15747 | 2017-05-03 16:03:34 |
| gldd-ex321_7.htm | 6542 | 2017-05-03 16:03:34 |
| gldd-ex322_9.htm | 6642 | 2017-05-03 16:03:34 |
| R1.htm | 21943 | 2017-05-03 16:03:34 |
| R10.htm | 56982 | 2017-05-03 16:03:34 |
| R11.htm | 100658 | 2017-05-03 16:03:34 |
| R12.htm | 50169 | 2017-05-03 16:03:34 |
| R13.htm | 14656 | 2017-05-03 16:03:34 |
| R14.htm | 179545 | 2017-05-03 16:03:34 |
| R15.htm | 8614 | 2017-05-03 16:03:34 |
| R16.htm | 14488 | 2017-05-03 16:03:34 |
| R17.htm | 6950 | 2017-05-03 16:03:34 |
| R18.htm | 27873 | 2017-05-03 16:03:34 |
| R19.htm | 58811 | 2017-05-03 16:03:34 |
| R2.htm | 86201 | 2017-05-03 16:03:34 |
| R20.htm | 1504666 | 2017-05-03 16:03:34 |
| R21.htm | 10237 | 2017-05-03 16:03:34 |
| R22.htm | 53927 | 2017-05-03 16:03:34 |
| R23.htm | 98532 | 2017-05-03 16:03:34 |
| R24.htm | 48849 | 2017-05-03 16:03:34 |
| R25.htm | 175440 | 2017-05-03 16:03:34 |
| R26.htm | 25457 | 2017-05-03 16:03:34 |
| R27.htm | 53617 | 2017-05-03 16:03:34 |
| R28.htm | 1499825 | 2017-05-03 16:03:34 |
| R29.htm | 9774 | 2017-05-03 16:03:34 |
| R3.htm | 10735 | 2017-05-03 16:03:34 |
| R30.htm | 7241 | 2017-05-03 16:03:34 |
| R31.htm | 26228 | 2017-05-03 16:03:34 |
| R32.htm | 20324 | 2017-05-03 16:03:34 |
| R33.htm | 19555 | 2017-05-03 16:03:34 |
| R34.htm | 5770 | 2017-05-03 16:03:34 |
| R35.htm | 24189 | 2017-05-03 16:03:34 |
| R36.htm | 95978 | 2017-05-03 16:03:34 |
| R37.htm | 7923 | 2017-05-03 16:03:34 |
| R38.htm | 29788 | 2017-05-03 16:03:34 |
| R39.htm | 21198 | 2017-05-03 16:03:34 |
| R4.htm | 60733 | 2017-05-03 16:03:34 |
| R40.htm | 18276 | 2017-05-03 16:03:34 |
| R41.htm | 15810 | 2017-05-03 16:03:34 |
| R42.htm | 11644 | 2017-05-03 16:03:34 |
| R43.htm | 21949 | 2017-05-03 16:03:34 |
| R44.htm | 14364 | 2017-05-03 16:03:34 |
| R45.htm | 27791 | 2017-05-03 16:03:34 |
| R46.htm | 15279 | 2017-05-03 16:03:34 |
| R47.htm | 9717 | 2017-05-03 16:03:34 |
| R48.htm | 15770 | 2017-05-03 16:03:34 |
| R49.htm | 10626 | 2017-05-03 16:03:34 |
| R5.htm | 18511 | 2017-05-03 16:03:34 |
| R50.htm | 116542 | 2017-05-03 16:03:34 |
| R51.htm | 61634 | 2017-05-03 16:03:34 |
| R52.htm | 75842 | 2017-05-03 16:03:34 |
| R6.htm | 8066 | 2017-05-03 16:03:34 |
| R7.htm | 41238 | 2017-05-03 16:03:34 |
| R8.htm | 104412 | 2017-05-03 16:03:34 |
| R9.htm | 16146 | 2017-05-03 16:03:34 |
| report.css | 2767 | 2017-05-03 16:03:34 |
| Show.js | 1410 | 2017-05-03 16:03:34 |