Operating Segments - Summarized Segment Financial Information (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | $ 60,231,000 | $ 49,712,000 | $ 54,014,000 | $ 57,290,000 | $ 37,277,000 | $ 49,884,000 | $ 45,868,000 | $ 37,993,000 | $ 221,247,000 | $ 171,022,000 | $ 286,326,000 |
| Gross profit (loss) | (3,964,000) | $ (3,212,000) | $ (699,000) | $ 679,000 | (25,914,000) | $ (494,000) | $ (11,620,000) | $ (4,897,000) | (7,196,000) | (42,925,000) | 24,853,000 |
| Operating income (loss) | (19,665,000) | (68,610,000) | 5,864,000 | ||||||||
| Depreciation expense | 10,350,000 | 12,745,000 | 25,448,000 | ||||||||
| Capital expenditures | 3,481,000 | 4,834,000 | 6,795,000 | ||||||||
| Total Assets | 258,290,000 | 270,840,000 | 258,290,000 | 270,840,000 | 322,408,000 | ||||||
| Increase in operating loss due to change in estimates | 9,100,000 | 1,800,000 | |||||||||
| Gain on insurance recoveries | 3,571,000 | 0 | 0 | ||||||||
| Impairment charges related to inventory and assets | 3,000,000 | ||||||||||
| Loss on disposition of assets sold | (4,100,000) | 268,000 | (35,000) | (757,000) | |||||||
| Loss related to cost overruns and re-work | 34,500,000 | 34,500,000 | |||||||||
| Fabrication | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Increase in operating loss due to change in estimates | 2,400,000 | ||||||||||
| Shipyard | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Increase in operating loss due to change in estimates | 5,800,000 | 6,700,000 | 34,500,000 | ||||||||
| Fabrication And Shipyard Segments | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Asset impairments, gains on the sale of assets held-for-sale and insurance proceeds | 6,900,000 | ||||||||||
| Gain on sale of South Texas Properties | 8,000,000 | ||||||||||
| Operating Segments | Fabrication | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 37,943,000 | 57,880,000 | 88,683,000 | ||||||||
| Gross profit (loss) | (7,794,000) | (1,941,000) | 5,276,000 | ||||||||
| Operating income (loss) | (2,950,000) | (12,010,000) | 2,009,000 | ||||||||
| Depreciation expense | 4,310,000 | 6,592,000 | 18,566,000 | ||||||||
| Capital expenditures | 73,000 | 2,395,000 | 2,633,000 | ||||||||
| Total Assets | 62,138,000 | 155,731,000 | 62,138,000 | 155,731,000 | 195,901,000 | ||||||
| Operating Segments | Shipyard | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 96,424,000 | 52,699,000 | 109,502,000 | ||||||||
| Gross profit (loss) | (10,472,000) | (44,870,000) | 7,801,000 | ||||||||
| Operating income (loss) | (14,396,000) | (50,044,000) | 2,436,000 | ||||||||
| Depreciation expense | 4,229,000 | 4,073,000 | 4,686,000 | ||||||||
| Capital expenditures | 2,003,000 | 1,909,000 | 1,861,000 | ||||||||
| Total Assets | 97,197,000 | 74,516,000 | 97,197,000 | 74,516,000 | 81,928,000 | ||||||
| Operating Segments | Services | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 88,230,000 | 65,445,000 | 91,414,000 | ||||||||
| Gross profit (loss) | 12,447,000 | 4,575,000 | 12,420,000 | ||||||||
| Operating income (loss) | 9,371,000 | 1,874,000 | 9,217,000 | ||||||||
| Depreciation expense | 1,511,000 | 1,676,000 | 1,775,000 | ||||||||
| Capital expenditures | 1,244,000 | 403,000 | 1,495,000 | ||||||||
| Total Assets | 38,643,000 | 32,487,000 | 38,643,000 | 32,487,000 | 37,102,000 | ||||||
| Operating Segments | EPC | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 2,477,000 | 198,000 | 0 | ||||||||
| Gross profit (loss) | (46,000) | 41,000 | 0 | ||||||||
| Operating income (loss) | (1,863,000) | 41,000 | 0 | ||||||||
| Depreciation expense | 5,000 | 0 | 0 | ||||||||
| Capital expenditures | 143,000 | 0 | 0 | ||||||||
| Total Assets | 1,938,000 | 198,000 | 1,938,000 | 198,000 | 0 | ||||||
| Corporate | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | 0 | 0 | 0 | ||||||||
| Gross profit (loss) | (1,331,000) | (730,000) | (644,000) | ||||||||
| Operating income (loss) | (9,827,000) | (8,471,000) | (7,798,000) | ||||||||
| Depreciation expense | 295,000 | 404,000 | 421,000 | ||||||||
| Capital expenditures | 18,000 | 127,000 | 806,000 | ||||||||
| Total Assets | 58,374,000 | 7,908,000 | 58,374,000 | 7,908,000 | 7,477,000 | ||||||
| Eliminations | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenue | (3,827,000) | (5,200,000) | (3,273,000) | ||||||||
| Gross profit (loss) | 0 | 0 | 0 | ||||||||
| Operating income (loss) | 0 | 0 | 0 | ||||||||
| Depreciation expense | 0 | 0 | 0 | ||||||||
| Capital expenditures | 0 | 0 | 0 | ||||||||
| Total Assets | $ 0 | $ 0 | 0 | 0 | $ 0 | ||||||
| Held for sale | South Texas Fabrication Yards, North Yard, Assets Under Agreement To Sell | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Gain on insurance recoveries | 3,600,000 | $ 0 | |||||||||
| Impairment charges related to inventory and assets | 4,400,000 | ||||||||||
| Loss on disposition of assets sold | $ 300,000 | ||||||||||