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Debt - Narrative (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 02, 2019 | Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 05, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  | $ 752,000 | $ 833,000 |  |  |  |  |  |  |
Long-term debt |  | 468,223,000 |  |  |  |  |  |  | $ 443,035,000 |
Plateau Excavation |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities incurred | $ 10,000,000 |  |  |  |  |  |  |  |  |
Tealstone Construction |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Promissory notes issued to the sellers |  | 5,000,000 |  |  |  |  |  |  |  |
Deferred cash payments due |  | 7,500,000 |  |  |  |  |  |  |  |
Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fees related to establishment of debt |  | $ 10,688,000 |  |  |  |  |  |  |  |
Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fixed charge ratio minimum |  | 1.20 |  |  |  |  |  |  |  |
Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument face amount | 475,000,000 |  |  |  |  |  |  |  |  |
Secured Debt | Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ 445,000,000 |  |  |  |  |  |  | 420,000,000 |
Secured Debt | Term Loan Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Weighted average interest rate |  | 6.05% |  |  |  |  |  |  |  |
Long-term debt |  | $ 395,000,000 |  |  |  |  |  |  | 400,000,000 |
Notes Payable, Other Payables | Plateau Excavation |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Liabilities incurred | $ 10,000,000 |  |  |  |  |  |  |  |  |
Stated interest rate | 8.00% |  |  |  |  |  |  |  |  |
Notes Payable, Other Payables | Tealstone Construction |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 12,500,000 |  |  |  |  |  |  | 12,230,000 |
Notes Payable, Other Payables | Notes payable for transportation and construction equipment and other |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ 723,000 |  |  |  |  |  |  | $ 805,000 |
Notes Payable, Other Payables | Notes payable for transportation and construction equipment and other | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 2.99% |  |  |  |  |  |  |  |
Debt instrument, term |  | 3 years |  |  |  |  |  |  |  |
Notes Payable, Other Payables | Notes payable for transportation and construction equipment and other | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 6.92% |  |  |  |  |  |  |  |
Debt instrument, term |  | 5 years |  |  |  |  |  |  |  |
Revolving Credit Facility | Secured Debt | Term Loan Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument face amount | $ 400,000,000 |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit, maximum borrowing capacity | 75,000,000 |  |  |  |  |  |  |  |  |
Debt instrument, base interest rate |  | 4.25% |  |  |  |  |  |  |  |
Debt instrument, LIBOR interest rate |  | 0.93% |  |  |  |  |  |  |  |
Line of credit, remaining borrowing capacity |  | $ 25,000,000 |  |  |  |  |  |  |  |
Weighted average interest rate |  | 6.17% |  |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | Base Rate |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 3.50% |  |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 4.50% |  |  |  |  |  |  |  |
Swing Line Loan | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit, maximum borrowing capacity | $ 15,000,000 |  |  |  |  |  |  |  |  |
Interest Rate Swap | Secured Debt |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  | $ 350,000,000 |  |  |  |  |  |  |  | $ 350,000,000
Forecast | Secured Debt | Term Loan Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Periodic payments |  |  |  | $ 220,000,000 | $ 50,000,000 | $ 50,000,000 | $ 50,000,000 | $ 30,000,000 |  |
October 1, 2019 - June 30, 2020 | Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Leverage ratio maximum |  | 4.00 |  |  |  |  |  |  |  |
July 1, 2020 - September 30, 2020 | Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Leverage ratio maximum |  | 3.75 |  |  |  |  |  |  |  |
October 1, 2020 - March 31, 2021 | Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Leverage ratio maximum |  | 3.50 |  |  |  |  |  |  |  |
April 1, 2021 - June 30, 2021 | Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Leverage ratio maximum |  | 3.25 |  |  |  |  |  |  |  |
October 1, 2021 - December 31, 2021 | Secured Debt | Credit Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Leverage ratio maximum |  | 3.00 |  |  |  |  |  |  |  |

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