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Loans and Leases - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Outstanding loans to Executive officers, directors, principal shareholders, related interest and parties	$ 7,000,000	$ 37,500,000
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates		$ 1,572,000
Loan classified as non accrual TDRs	2,100		$ 600,000
C&I and One-to-Four Family
Financing Receivable, Recorded Investment [Line Items]
Loan classified as non accrual TDRs			$ 140,000
Financing Receivable Troubled Debt Restructurings Rate Reductions
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates	32,100,000
Financing Receivable Troubled Debt Restructurings Forbearance of Arrears
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans selectively extended to certain borrowers, rate reductions, forbearance of arrears, and extension of maturity dates	$ 146,000

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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