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Note 5 - Loans Held for Sale (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Loans Serviced By Entity But Owned By a Third Party	$ 20,000,000		$ 19,400,000
Servicing Asset, Total	327,000
Servicing Asset at Fair Value, Amount, Ending Balance	391,000
SBA Loans [Member]
Transfer of Loans Held-for-sale to Portfolio Loans	281,000	$ 280,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance	1,900,000
Commercial Portfolio Segment [Member]
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance	$ 938,000		$ 1,200,000

X

- Definition

Represents the amount of loans serviced by the reporting entity but owned by a third party, as of a specified date.

+ References

No definition available.

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- Definition

Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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- Definition

Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

+ References

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-Publisher FASB
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X

- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

+ References

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