Leases - Components of Lease Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease cost	$ 12,000	$ 15,000	$ 14,200
Operating cash flows related to operating leases	11,800	14,900
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 19,300	$ 6,400
Weighted-average remaining lease term	13 years	14 years
Weighted-average discount rate	3.37%	2.66%