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Loans and Allowance for Loan Losses (Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.12%		0.17%
Net of deferred loan fees and costs	$ 3.9		$ 3.9
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.07%		0.09%
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Part of loans of 30 days or more past due as a percentage of total loan portfolio	0.05%		0.08%
Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Percentage of SBA to guarantee of certain loans	100.00%
Number of loan processed		853
Loans receivables		$ 97.5

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=123392090&loc=d3e45377-112738

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534

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Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

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