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Credit Facilities and Debt - Additional Information (Details) - USD ($) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
May 03, 2024 | Nov. 06, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Jun. 30, 2023
Line Of Credit Facility [Line Items] |  |  |  |  |
Surety bonds |  |  | $ 52,500,000 |  |
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 |  |
Subsequent Event |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Maturity date | Jun. 30, 2026 |  |  |  |
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 |  |  | $ 13,000,000 |  |
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 |  |  |  | $ 1,000,000 |
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, periodic payment |  | $ 1,700,000 |  |  |
Debt instrument, frequency of periodic payment |  | 15 |  |  |
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 |  |  | 6,900,000 |  |
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%

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