Quarterly report pursuant to Section 13 or 15(d)

Revenue, Contract Assets and Liabilities and Other Contract Matters - Additional Information (Details)

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Revenue, Contract Assets and Liabilities and Other Contract Matters - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Sep. 30, 2023
Mar. 31, 2023
Dec. 31, 2023
Long Term Contracts Or Programs Disclosure [Line Items]        
Allowance for doubtful accounts and credit losses $ 200     $ 200
Increase to beginning accumulated deficit $ (35,133)     (41,373)
Litigation Settlement, Expense   $ 32,500    
Hurricane Ida        
Long Term Contracts Or Programs Disclosure [Line Items]        
Impact of Hurricane Ida, description During 2021, our operations were impacted by Hurricane Ida, which made landfall near Houma, Louisiana as a high-end Category 4 hurricane, causing debris and damage to our buildings and equipment at our Houma Facilities.      
Insurance payments received $ 2,000   $ 700  
Gain on interruptions insurance recovery     200  
Insurance receivables       2,000
Remaining Forty-Vehicle Ferry | Hurricane Ida        
Long Term Contracts Or Programs Disclosure [Line Items]        
Total charges related to deductibles     $ 100  
Shipyard Division        
Long Term Contracts Or Programs Disclosure [Line Items]        
Reduction of estimated contract price for liquidated damages, amount       $ 1,400