Loans and Allowance for Loan Losses - Summary of Non Accrual Loan (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Receivables [Abstract]
Total nonaccrual loans	$ 32,891	$ 35,571
Interest foregone quarter to date	754	1,620
Amount of foregone interest applied to principal in the quarter	107	432
Interest foregone life to date	2,458	3,623
Amount of foregone interest applied to principal life-to-date	$ 1,016	$ 942
Percentage of nonaccrual loans to gross loan portfolio	2.00%	2.00%
Percentage of allowance for loan losses to nonaccrual loans	154.00%	141.00%