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v3.23.3

Credit Facilities and Debt - Additional Information (Details) - USD ($) |  |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 06, 2023 | May 05, 2023 | Mar. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Maturity date |  | Jun. 30, 2024 |  |  |  |
Surety bonds |  |  |  | $ 101,600,000 |  |
Surety bonds subject to dispute |  |  |  | 50,000,000 |  |
Surety bonds relates to Active Retained Shipyard Contracts |  |  |  | $ 45,600,000 |  |
Subsequent Event |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
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 |  |  |
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 |  |  |  | $ 1,300,000 |  | $ 1,000,000
Fabrication |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Surety bonds subject to dispute |  |  |  | $ 6,000,000 |  |
Maximum |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Letter of credit facility |  | $ 20,000,000 |  |  |  |
Minimum |  |  |  |  |  |
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 |  |  |  | $ 1,200,000 |  |
Letter of Credit |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |
Stated interest rate (percentage) |  |  |  |  | 1.50% |

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