Leases - Components of Lease Expense (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortization of right-of-use assets			$ 500,000
Interest on lease liabilities	0	0	0
Total finance lease cost			500,000
Operating lease cost	17,900,000	15,600,000	13,800,000
Short-term lease cost	8,100,000	7,200,000	3,800,000
Variable lease cost	0	300,000	300,000
Total lease cost	$ 26,000,000	$ 23,100,000	$ 18,400,000