Leases (Supplemental Balance Sheet Information) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 65,417	$ 48,808
Operating lease, right-of-use asset, statement of financial position [Extensible List]	Other assets	Other assets
Operating lease liabilities	$ 67,227	$ 50,236
Operating lease, liability, statement of financial position [Extensible List]	Other liabilities	Other liabilities