Operating Segments (Details) ton in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2016
USD ($)
ton
|
Sep. 30, 2016
USD ($)
|
Jun. 30, 2016
USD ($)
|
Mar. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Sep. 30, 2015
USD ($)
|
Jun. 30, 2015
USD ($)
|
Mar. 31, 2015
USD ($)
|
Dec. 31, 2016
USD ($)
ton
segment
|
Dec. 31, 2015
USD ($)
jacket
|
Dec. 31, 2014
USD ($)
|
|
| Segment Reporting Information [Line Items] | |||||||||||
| Divisions | segment | 3 | ||||||||||
| Revenue | $ 55,461 | $ 65,384 | $ 81,502 | $ 83,979 | $ 55,018 | $ 67,531 | $ 84,338 | $ 99,233 | $ 286,326 | $ 306,120 | $ 506,639 |
| Gross profit (loss) | (172) | 5,259 | 14,066 | 5,701 | (17,572) | (7,837) | 5,805 | 4,448 | 24,853 | (15,156) | 44,556 |
| Operating income (loss) | 5,183 | (38,614) | 23,947 | ||||||||
| Depreciation expense | 25,448 | 26,204 | 26,436 | ||||||||
| Capital expenditures | 6,795 | 6,018 | 27,658 | ||||||||
| Total Assets | 322,408 | 316,923 | 322,408 | 316,923 | 397,943 | ||||||
| Net (loss) income | (3,555) | $ 541 | $ 5,540 | $ 989 | (14,667) | $ (12,137) | $ 1,357 | $ 83 | 3,515 | (25,364) | 15,320 |
| Recognition of deferred revenue | 5,223 | $ 0 | 0 | ||||||||
| Number of jackets and piles constructed | jacket | 5 | ||||||||||
| Operating Segments | Fabrication | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 88,683 | $ 151,576 | 303,880 | ||||||||
| Gross profit (loss) | 5,061 | (37,541) | 19,418 | ||||||||
| Operating income (loss) | (1,039) | (54,036) | 4,079 | ||||||||
| Depreciation expense | 18,566 | 22,045 | 22,524 | ||||||||
| Capital expenditures | 2,633 | 3,360 | 23,245 | ||||||||
| Total Assets | 272,292 | 310,790 | 272,292 | 310,790 | 396,806 | ||||||
| Operating Segments | Shipyards | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 109,502 | 59,601 | 79,197 | ||||||||
| Gross profit (loss) | 7,587 | 8,665 | 4,922 | ||||||||
| Operating income (loss) | (163) | 6,973 | 3,262 | ||||||||
| Depreciation expense | 4,686 | 1,921 | 1,805 | ||||||||
| Capital expenditures | 1,861 | 1,206 | 2,135 | ||||||||
| Total Assets | 81,928 | 54,543 | 81,928 | 54,543 | 63,090 | ||||||
| Operating Segments | Services | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 91,414 | 100,431 | 132,107 | ||||||||
| Gross profit (loss) | 12,205 | 13,726 | 20,258 | ||||||||
| Operating income (loss) | 6,568 | 9,548 | 17,502 | ||||||||
| Depreciation expense | 1,775 | 1,733 | 1,612 | ||||||||
| Capital expenditures | 1,495 | 1,379 | 2,083 | ||||||||
| Total Assets | 96,404 | 94,618 | 96,404 | 94,618 | 95,385 | ||||||
| Corp. & Eliminations | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | (3,273) | (5,488) | (8,545) | ||||||||
| Gross profit (loss) | 0 | (6) | (42) | ||||||||
| Operating income (loss) | (183) | (1,099) | (896) | ||||||||
| Depreciation expense | 421 | 505 | 495 | ||||||||
| Capital expenditures | 806 | 73 | 195 | ||||||||
| Total Assets | (128,216) | $ (143,028) | (128,216) | (143,028) | $ (157,338) | ||||||
| LEEVAC | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 75,600 | 87,239 | |||||||||
| Total Assets | $ 52,200 | 52,200 | |||||||||
| Net (loss) income | (1,800) | $ (4,655) | |||||||||
| Recognition of deferred revenue | 5,200 | ||||||||||
| LEEVAC | Shipyards | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 75,600 | ||||||||||
| Net (loss) income | (1,800) | ||||||||||
| Recognition of deferred revenue | $ 5,200 | ||||||||||
| Prospect Shipyard | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Current dry dock lift capacity | ton | 9 | 9 | |||||||||
| Expected dry dock lift capacity | ton | 15 | 15 | |||||||||