Quarterly report pursuant to Section 13 or 15(d)

Operating Segments - Summarized Segment Financial Information (Details)

v3.21.1
Operating Segments - Summarized Segment Financial Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Revenue $ 58,951 $ 78,555  
Gross profit (loss) 7,581 (254)  
Operating income (loss) (18,458) 5,936  
Depreciation and amortization expense 1,940 2,220  
Capital expenditures 460 2,124  
Total assets 213,426 251,029 $ 231,343
Operating Segments | F&S      
Segment Reporting Information [Line Items]      
Revenue 19,060 33,443  
Gross profit (loss) 1,042 970  
Operating income (loss) 981 10,165  
Depreciation and amortization expense 1,021 1,358  
Capital expenditures 160 681  
Total assets 56,241 70,886  
Operating Segments | Shipyard      
Segment Reporting Information [Line Items]      
Revenue 40,296 45,559  
Gross profit (loss) 6,539 (1,224)  
Operating income (loss) (17,450) (1,899)  
Depreciation and amortization expense 840 787  
Capital expenditures 300 1,443  
Total assets 103,236 109,651  
Corporate      
Segment Reporting Information [Line Items]      
Revenue (405) (447)  
Operating income (loss) (1,989) (2,330)  
Depreciation and amortization expense 79 75  
Total assets $ 53,949 $ 70,492