Operating Segments - Summarized Segment Financial Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | $ 79,445 | $ 75,802 | $ 80,456 | $ 67,605 | $ 60,231 | $ 49,712 | $ 54,014 | $ 57,290 | $ 303,308 | $ 221,247 | $ 171,022 |
| Gross profit (loss) | (13,269) | $ (2,685) | $ (1,598) | $ 553 | (3,964) | $ (3,212) | $ (699) | $ 679 | (16,999) | (7,196) | (42,925) |
| Operating income (loss) | (50,021) | (19,665) | (68,610) | ||||||||
| Depreciation and amortization expense | 9,564 | 10,350 | 12,745 | ||||||||
| Capital expenditures | 3,790 | 3,481 | 4,834 | ||||||||
| Total Assets | 252,777 | 258,290 | 252,777 | 258,290 | 270,840 | ||||||
| Fabrication | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 70,052 | 40,420 | 58,078 | ||||||||
| Shipyard | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 159,217 | 96,424 | 52,699 | ||||||||
| Services | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 81,706 | 88,230 | 65,445 | ||||||||
| Operating Segments | Fabrication | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 70,052 | 40,420 | 58,078 | ||||||||
| Gross profit (loss) | (11,249) | (7,840) | (1,900) | ||||||||
| Operating income (loss) | (22,101) | (4,813) | (11,969) | ||||||||
| Depreciation and amortization expense | 3,534 | 4,315 | 6,592 | ||||||||
| Capital expenditures | 810 | 216 | 2,395 | ||||||||
| Total Assets | 55,066 | 64,076 | 55,066 | 64,076 | 155,929 | ||||||
| Operating Segments | Shipyard | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 159,217 | 96,424 | 52,699 | ||||||||
| Gross profit (loss) | (10,949) | (10,472) | (44,870) | ||||||||
| Operating income (loss) | (21,352) | (14,396) | (50,044) | ||||||||
| Depreciation and amortization expense | 4,167 | 4,229 | 4,073 | ||||||||
| Capital expenditures | 1,827 | 2,003 | 1,909 | ||||||||
| Total Assets | 97,409 | 97,197 | 97,409 | 97,197 | 74,516 | ||||||
| Operating Segments | Services | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 81,706 | 88,230 | 65,445 | ||||||||
| Gross profit (loss) | 5,516 | 12,447 | 4,575 | ||||||||
| Operating income (loss) | 3,329 | 9,371 | 1,874 | ||||||||
| Depreciation and amortization expense | 1,450 | 1,511 | 1,676 | ||||||||
| Capital expenditures | 1,153 | 1,244 | 403 | ||||||||
| Total Assets | 28,336 | 38,643 | 28,336 | 38,643 | 32,487 | ||||||
| Corporate | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | (7,667) | (3,827) | (5,200) | ||||||||
| Gross profit (loss) | (317) | (1,331) | (730) | ||||||||
| Operating income (loss) | (9,897) | (9,827) | (8,471) | ||||||||
| Depreciation and amortization expense | 413 | 295 | 404 | ||||||||
| Capital expenditures | 0 | 18 | 127 | ||||||||
| Total Assets | $ 71,966 | $ 58,374 | $ 71,966 | $ 58,374 | $ 7,908 | ||||||