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Operating Segments - Summarized Segment Financial Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | $ 59,974 | $ 80,456 | $ 138,529 | $ 148,061 |
Gross profit (loss) | (1,703) | (1,598) | (1,957) | (1,045) |
Operating income (loss) | (5,426) | (5,384) | 510 | (8,666) |
Depreciation and amortization expense | 2,067 | 2,422 | 4,287 | 4,974 |
Capital expenditures | 5,621 | 1,109 | 7,745 | 1,359 |
Total assets | 262,554 | 277,591 | 262,554 | 277,591 | $ 252,777
Shipyard |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 33,888 | 40,053 | 79,447 | 77,464 |
F&S |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 26,606 | 40,653 | 60,049 | 71,246 |
Operating Segments | Shipyard |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 33,888 | 40,053 | 79,447 | 77,464 |
Gross profit (loss) | (1,231) | (2,912) | (2,455) | (3,192) |
Operating income (loss) | (1,724) | (3,564) | (3,623) | (4,468) |
Depreciation and amortization expense | 802 | 1,047 | 1,589 | 2,156 |
Capital expenditures | 4,299 | 712 | 5,742 | 734 |
Total assets | 116,541 | 106,851 | 116,541 | 106,851 |
Operating Segments | F&S |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 26,606 | 40,653 | 60,049 | 71,246 |
Gross profit (loss) | (472) | 1,460 | 498 | 2,429 |
Operating income (loss) | (1,394) | 517 | 8,771 | 266 |
Depreciation and amortization expense | 1,188 | 1,254 | 2,546 | 2,595 |
Capital expenditures | 1,143 | 397 | 1,824 | 625 |
Total assets | 73,342 | 90,011 | 73,342 | 90,011 |
Corporate |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | (520) | (250) | (967) | (649) |
Gross profit (loss) |  | (146) |  | (282) |
Operating income (loss) | (2,308) | (2,337) | (4,638) | (4,464) |
Depreciation and amortization expense | 77 | 121 | 152 | 223 |
Capital expenditures | 179 |  | 179 |  |
Total assets | $ 72,671 | $ 80,729 | $ 72,671 | $ 80,729 |

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