Commitments, Contingencies and Other Matters - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Letters of credit, collateral for retrospective premiums and retained losses	$ 92,400
Purchase Commitment Remaining Minimum Amount Committed	153,000
Unrecorded Unconditional Purchase Obligation Balance Sheet Amount	39,700
Purchase obligations for 2024	4,000
UnrecordedUnconditionalPurchaseObligationBalanceOnNexttwelvemonth	33,700
Purchase obligations for 2026	2,000
Deductible Per Occurrence For Workers Compensation Insurance Policy	1,500
Deductible Per Occurrence For Equipment Insurance Policy	10,000
Deductible Per Occurrence For General Liability Insurance Policy	2,000
Deductible Per Occurrence For Primary Automobile Liability Insurance Policy	1,000
Deductible Per Occurrence For Excess Automobile Liability Insurance Policy	10,000
Letter of Credit
Other Commitments [Line Items]
Amount drawn under letters of credit	0
Purchase Commitment [Member]
Other Commitments [Line Items]
Purchase Commitment Remaining Minimum Amount Committed	$ 135,000	$ 93,000	$ 66,900
Change in Control Agreements
Other Commitments [Line Items]
Employee Entitlement Ratio On Sum Of Highest Salary And Average Bonus	2.00%
Continued Coverage Entitlement Of Welfare Plan Period	2 years
Change in Control Agreements | Specified Employees
Other Commitments [Line Items]
Agreement Extension Period	12 months
Agreement New Term Notification Period	90 days
Employment Agreements
Other Commitments [Line Items]
Initial Agreement Term	3 years
Agreement Termination Description	Under specified circumstances, we may terminate the executive’s employment under his Employment Agreement for Cause (as defined in the Employment Agreement) by providing written notice 10 - 30 days, depending on the nature of the cause trigger, before the effective date of such termination and granting at least 10 - 20 days, depending on the nature of the cause trigger, to cure the cause for such termination or (ii) by providing written notice of such termination at least 30 days before the effective date of such termination and by granting at least 20 days to cure the cause for such termination, provided that if the matter is reasonably determined by us to not be capable of being cured, the executive may be terminated for cause on the date the written notice is delivered.
Accelerated Vesting Period Description	we will accelerate vesting of all time-based equity, phantom equity and long-term cash incentive awards on the 60th day following the executive’s termination
Period Considered For Calculating Annual Cash Bonus Payment	3 years
Description Of Postemployment Benefits	If our decision to terminate other than for Cause or by the executive for Good Reason occurs following a Change in Control (as defined in his Employment Agreement, the executive will generally be entitled to the same severance payments and benefits described above except that the pro-rated lump-sum payment for annual cash bonuses will be based on his highest annual cash bonus for the last three years, and the executive will be entitled to 36 months (in the case of the Chief Executive Officer) or 30 months (in the case of the Chief Financial Officer, Chief Business Officer and General Counsel) of subsidized benefits continuation coverage.
Employment Agreements | Deferred Bonus [Member]
Other Commitments [Line Items]
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount	$ 2,000
Employment Agreements | Minimum
Other Commitments [Line Items]
Agreement Termination Notice Period	30 days
Employment Agreements | Chief Executive Officer
Other Commitments [Line Items]
Employee Entitlement Ratio On Sum Of Base Salary And Average Cash Bonus	3.00%
Period For Subsidized Benefit Continuation Coverage	36 months
Employment Agreements | Chief Financial Officer, General Counsel and President
Other Commitments [Line Items]
Employee Entitlement Ratio On Sum Of Base Salary And Average Cash Bonus	2.50%
Period For Subsidized Benefit Continuation Coverage	30 months