Stockholders' Equity - Additional Information (Detail) - USD ($)	1 Months Ended
	Sep. 30, 2021	Jun. 30, 2022	Jun. 17, 2021
Stockholders Equity [Line Items]
Additional shares to repurchase	650,000
Subordinated Notes due 2036 [Member] | Private Placement [Member]
Stockholders Equity [Line Items]
Aggregate principal amount			$ 60,000,000
Small Business Administration (SBA), CARES Act, Paycheck Protection Program Lending Facility [Member]
Stockholders Equity [Line Items]
Percentage of risk weight under risk based capital rules		0.00%
Maximum [Member]
Stockholders Equity [Line Items]
Quantitative limit for trust preferred securities to be included in tier 1 capital		$ 15,000,000,000