Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Revenue, Contract Assets and Liabilities and Other Contract Matters - Additional Information (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Vechicle
Sep. 30, 2022
USD ($)
Jan. 01, 2023
USD ($)
Dec. 31, 2022
USD ($)
Long Term Contracts Or Programs Disclosure [Line Items]            
Recognized income associated with revisions to allowance for doubtful accounts $ 200,000   $ 400,000      
Allowance for doubtful accounts and credit losses 200,000   200,000      
Increase to beginning accumulated deficit (48,463,000)   (48,463,000)     $ (16,339,000)
Litigation Settlement, Expense 32,500,000   32,500,000      
Future repair costs associated with insurance payments received for buildings     500,000      
Accounts receivable 5,000,000   5,000,000      
ASU 2016-13            
Long Term Contracts Or Programs Disclosure [Line Items]            
Increase to beginning accumulated deficit         $ 600,000  
MPSV Litigation            
Long Term Contracts Or Programs Disclosure [Line Items]            
Litigation Settlement, Expense 32,500,000   $ 32,500,000      
Hurricane Ida            
Long Term Contracts Or Programs Disclosure [Line Items]            
Date of landfall     Aug. 29, 2021      
Impact of Hurricane Ida, description     On August 29, 2021, Hurricane Ida made landfall near Houma, Louisiana as a high-end Category 4 hurricane, with high winds and heavy rains causing damage to buildings and equipment at our Houma Facilities and resulting in significant debris throughout the facility.      
Insurance payments received     $ 2,200,000 $ 7,000,000    
Gain on interruptions insurance recovery 300,000 $ 600,000        
Gain on insurance recovery   $ 1,300,000 500,000 4,400,000    
Insurance receivables 0.1   $ 0.1      
Forty-Vehicle Ferry            
Long Term Contracts Or Programs Disclosure [Line Items]            
Number of vehicle ferry projects with rework and construction challenges. | Vechicle     2      
Change in estimated margins 300,000   $ 500,000      
Seventy-Vehicle Ferry            
Long Term Contracts Or Programs Disclosure [Line Items]            
Reserve for loss 100,000   100,000      
Change in estimated margins 1,200,000   1,800,000      
Remaining Forty-Vehicle Ferry | Hurricane Ida            
Long Term Contracts Or Programs Disclosure [Line Items]            
Total charges related to deductibles 100,000   400,000 $ 200,000    
Forty Vehicle Ferry Projects            
Long Term Contracts Or Programs Disclosure [Line Items]            
Reserve for loss 300,000   300,000      
Shipyard            
Long Term Contracts Or Programs Disclosure [Line Items]            
Reduction of estimated contract price for liquidated damages, amount 1,500,000   1,500,000     $ 1,400,000
Change in estimated margins 1,500,000   2,300,000      
Fabrication            
Long Term Contracts Or Programs Disclosure [Line Items]            
Change in estimated margins $ 700,000   $ 700,000