Quarterly report pursuant to Section 13 or 15(d)

Segment Disclosures - Summarized Segment Financial Information (Details)

v3.8.0.1
Segment Disclosures - Summarized Segment Financial Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Segment Reporting Information [Line Items]      
Revenue $ 57,290 $ 37,993  
Gross profit (loss) 679 (4,897)  
Operating income (loss) (4,780) (9,216)  
Total assets 269,122 304,660 $ 270,840
Depreciation and amortization expense 2,749 4,700  
Capital expenditures 71 391  
Corporate      
Segment Reporting Information [Line Items]      
Revenue 0 0  
Gross profit (loss) (385) (260)  
Operating income (loss) (2,523) (1,739)  
Total assets 318,137 349,917  
Depreciation and amortization expense 138 124  
Capital expenditures 0 17  
Eliminations      
Segment Reporting Information [Line Items]      
Revenue (488) (1,350)  
Gross profit (loss) 0 0  
Operating income (loss) 0 0  
Total assets (415,072) (427,142)  
Depreciation and amortization expense 0 0  
Capital expenditures 0 0  
Fabrication | Operating Segments      
Segment Reporting Information [Line Items]      
Revenue 17,270 10,209  
Gross profit (loss) (219) (2,966)  
Operating income (loss) (1,593) (3,787)  
Total assets 184,263 197,834  
Depreciation and amortization expense 1,149 3,135  
Capital expenditures 0 102  
Shipyards | Operating Segments      
Segment Reporting Information [Line Items]      
Revenue 18,565 18,422  
Gross profit (loss) (1,023) (1,704)  
Operating income (loss) (1,819) (3,057)  
Total assets 76,150 88,489  
Depreciation and amortization expense 1,069 1,009  
Capital expenditures 6 272  
Services | Operating Segments      
Segment Reporting Information [Line Items]      
Revenue 21,870 10,712  
Gross profit (loss) 2,614 33  
Operating income (loss) 1,880 (633)  
Total assets 105,632 95,562  
Depreciation and amortization expense 393 432  
Capital expenditures 65 0  
EPC Division | Operating Segments      
Segment Reporting Information [Line Items]      
Revenue 73 0  
Gross profit (loss) (308) 0  
Operating income (loss) (725) 0  
Total assets 12 0  
Depreciation and amortization expense 0 0  
Capital expenditures $ 0 $ 0