Leases - Components of Lease Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 14,230	$ 12,997	$ 13,400
Operating cash flows related to operating leases	14,440	13,476
Right-of-use assets obtained in exchange for new operating lease liabilities	21,857	10,737
Right-of-use assets obtained in acquisitions	$ 4,795	$ 0
Weighted-average remaining lease term	14 years	11 years
Weighted-average discount rate	2.49%	3.89%