Annual report pursuant to Section 13 and 15(d)

Quarterly Operating Results (Unaudited) - Summary of Quarterly Results of Operations (Details)

v3.8.0.1
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