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Quarterly Operating Results (Unaudited) - Summary of Quarterly Results of Operations (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) vessel $ / shares | Sep. 30, 2017 USD ($) $ / shares | Jun. 30, 2017 USD ($) $ / shares | Mar. 31, 2017 USD ($) $ / shares | Dec. 31, 2016 USD ($) $ / shares | Sep. 30, 2016 USD ($) $ / shares | Jun. 30, 2016 USD ($) $ / shares | Mar. 31, 2016 USD ($) $ / shares | Dec. 31, 2017 USD ($) vessel $ / shares | Dec. 31, 2016 USD ($) $ / shares | Dec. 31, 2015 USD ($) $ / shares
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 37,277 | $ 49,884 | $ 45,868 | $ 37,993 | $ 55,461 | $ 65,384 | $ 81,502 | $ 83,979 | $ 171,022 | $ 286,326 | $ 306,120
Gross profit (loss) | (25,914) | (494) | (11,620) | (4,897) | (173) | 5,259 | 14,066 | 5,701 | (42,925) | 24,853 | (15,156)
Net income (loss) | $ (24,279) | $ (3,110) | $ (10,923) | $ (6,454) | $ (3,555) | $ 541 | $ 5,540 | $ 989 | $ (44,766) | $ 3,515 | $ (25,364)
Basic and fully diluted earnings (loss) per share—common shareholders (in dollars per share) | $ / shares | $ (1.63) | $ (0.21) | $ (0.73) | $ (0.44) | $ (0.24) | $ 0.04 | $ 0.37 | $ 0.07 | $ (3.02) | $ 0.24 | $ (1.75)
Loss related to cost overruns and re-work | $ 22,500 |  |  |  |  |  |  |  | $ 34,500 |  |
Number of multi-purpose service vessels being constructed | vessel | 2 |  |  |  |  |  |  |  | 2 |  |
Estimated liquidated damages | $ 233 |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated liquidated damages |  |  |  |  |  |  |  |  | $ 11,200 |  |

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