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Fair Value Measurements And Fair Values Of Financial Instruments (Fair Value, By Balance Sheet Grouping) (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available for sale, at fair value	$ 346,473,000	$ 187,433,000
Equity securities, at fair value	301,000	440,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	71,160,000	83,828,000
Long-term interest-bearing deposits in other banks	14,235,000	8,746,000
Loans held for sale	9,498,000	2,040,000
Net loans	1,005,807,000	922,609,000
Accrued interest receivable	6,286,000	3,845,000
Deposits	1,336,749,000	1,125,392,000
Accrued interest payable	378,000	436,000
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	71,160,000	83,828,000
Long-term interest-bearing deposits in other banks	14,235,000	8,746,000
Loans held for sale	9,498,000	2,040,000
Net loans	1,008,275,000	918,640,000
Accrued interest receivable	6,286,000	3,845,000
Deposits	1,337,396,000	1,125,877,000
Accrued interest payable	378,000	436,000
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	71,160,000	83,828,000
Long-term interest-bearing deposits in other banks	14,235,000	8,746,000
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for sale	9,498,000	2,040,000
Deposits	1,337,396,000	1,125,877,000
Accrued interest payable	378,000	436,000
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	1,008,275,000	918,640,000
Accrued interest receivable	$ 6,286,000	$ 3,845,000

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- Definition

Fair value as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Fair value portion of accrued expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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