Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Stockholders' Equity - Additional Information (Detail) - USD ($)	Mar. 31, 2023	Jun. 17, 2021
Subordinated Notes due 2036 [Member] \| Private Placement [Member]
Stockholders Equity [Line Items]
Aggregate principal amount		$ 60,000,000
Maximum [Member]
Stockholders Equity [Line Items]
Quantitative limit for trust preferred securities to be included in tier 1 capital	$ 15,000,000,000