Annual report pursuant to Section 13 and 15(d)

Shipyard Transaction and Discontinued Operations - Summary of Operating Results Constituting Loss Form Discontinued Operations (Parenthetical) (Details)

v3.22.1
Shipyard Transaction and Discontinued Operations - Summary of Operating Results Constituting Loss Form Discontinued Operations (Parenthetical) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Other (income) expense, net $ 647 $ (600)
Shipyard Transaction    
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Estimated loss related to impairment of long lived assets and transaction costs 22,800 1,600
Additional loss related to additional transaction and other costs 2,600  
Other (income) expense, net 600 (500)
Towing Salvage and Rescue Ship    
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Change in estimated margins 8,400 $ (8,300)
Approved change order from increased contract price 9,200  
Increased craft labor costs $ 800