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v3.23.3

Debt - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2019 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Total debt | $ 358,366,000 |  |  | $ 358,366,000 |  |  |  | $ 434,564,000
Amortization of debt issuance costs | 504,000 | $ 534,000 |  | 1,585,000 | $ 1,636,000 |  |  |
Plateau Excavation |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Estimated tax basis step-up payment |  |  | $ 10,000,000 |  |  |  |  |
Secured Debt | Credit Agreement |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument face amount | 615,000,000 |  |  | 615,000,000 |  |  |  |
Secured Debt | Term Loan Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of debt | 8,709,000 |  |  | 23,225,000 |  |  |  |
Early repayment of debt | 0 |  |  | 53,000,000 |  |  |  |
Total debt | 347,438,000 |  |  | 347,438,000 |  |  |  | $ 423,663,000
Secured Debt | Term Loan Facility | Forecast |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Periodic payments |  |  |  |  |  | $ 26,100,000 | $ 31,900,000 |
Secured Debt | Term Loan Facility | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument face amount | 540,000,000 |  |  | 540,000,000 |  |  |  |
Line of Credit | Revolving Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of credit, maximum borrowing capacity | $ 75,000,000 |  |  | $ 75,000,000 |  |  |  |
Debt instrument, SOFR interest rate |  |  |  | 5.43% |  |  |  |
Weighted average interest rate | 6.91% |  |  | 6.91% |  |  |  |
Line of Credit | Revolving Credit Facility | Revolving Credit Facility | SOFR |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 1.50% |  |  |  |
Line of Credit | Revolving Credit Facility | Swing Line Loan |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Line of credit, maximum borrowing capacity | $ 15,000,000 |  |  | $ 15,000,000 |  |  |  |
Notes Payable, Other Payables | Plateau Excavation |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Stated interest rate |  |  | 8.00% |  |  |  |  |

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