Quarterly report pursuant to Section 13 or 15(d)

Credit Facilities and Debt - Additional Information (Details)

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Credit Facilities and Debt - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
May 03, 2024
Nov. 06, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Line Of Credit Facility [Line Items]          
Maturity date Jun. 30, 2026        
Surety bonds       $ 50,000,000  
Debt instrument, interest rate terms   principal and interest payable in 15 equal annual installments      
Percentage of provision required from proceeds received in excess of sale of real estate       50.00%  
Proceeds from sale of real estate required to make provision       $ 8,000,000  
Short-term Premium Finance Arrangement          
Line Of Credit Facility [Line Items]          
Stated interest rate (percentage)     4.30%    
Short-term premium finance     $ 2,400,000    
Short-term premium finance, Number of installment     payable in ten equal monthly installments through March 2023    
Note Agreement          
Line Of Credit Facility [Line Items]          
Stated interest rate (percentage)       2.90%  
Short-term premium finance       $ 13,400,000  
General Liability Arrangement          
Line Of Credit Facility [Line Items]          
Stated interest rate (percentage)       6.60%  
Short-term premium finance       $ 500,000  
Short-term premium finance, Number of installment       payable in eight equal monthly installments through August 2023  
Insurance Finance and General Liability Arrangements          
Line Of Credit Facility [Line Items]          
Principal payments         $ 1,100,000
Promissory Note | Note Agreement          
Line Of Credit Facility [Line Items]          
Stated interest rate (percentage)   3.00%      
Debt instrument, issued, principal   $ 20,000,000      
Debt instrument, frequency of periodic payment   15      
Debt instrument, periodic payment   $ 1,700,000      
Debt instrument, maturity date, start   Dec. 31, 2024      
Debt instrument, maturity date, end   Dec. 31, 2038      
Ferry Projects          
Line Of Credit Facility [Line Items]          
Surety bonds subject to dispute       $ 45,600,000  
Fabrication          
Line Of Credit Facility [Line Items]          
Surety bonds subject to dispute       4,400,000  
Maximum          
Line Of Credit Facility [Line Items]          
Letter of credit facility       $ 10,000,000  
LC Facility          
Line Of Credit Facility [Line Items]          
Fees on undrawn borrowings (percentage)       0.40%  
Total outstanding letters of credit       $ 1,500,000  
Letter of Credit          
Line Of Credit Facility [Line Items]          
Stated interest rate (percentage)         1.50%