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Stockholders' Equity - Additional Information (Detail) - USD ($)	Jun. 30, 2021	Jun. 17, 2021
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

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Percentage of risk weight under risk-based capital rules.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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