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Note 5 - Fair Value Measurements - Fair Value Quantitative Information (Details) - Fair Value, Nonrecurring [Member] $ in Thousands	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Loans receivable	$ 8,762	$ 9,012
Loans receivable	8,762	9,012
Other real estate owned		218
Fair Value, Inputs, Level 3 [Member]
Loans receivable	8,762	9,012
Loans receivable	8,762	9,012
Other real estate owned		218
Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Impaired Loan [Member]
Loans receivable	8,762	9,012
Loans receivable	$ 8,762	9,012
Appraisal Valuation [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Other real estate owned		$ 218
Appraisal Valuation [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member] | Minimum [Member] | Measurement Input, Discount Rate [Member]
Other real estate owned		6
Appraisal Valuation [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member] | Maximum [Member] | Measurement Input, Discount Rate [Member]
Other real estate owned		8
Appraisal Valuation [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member] | Weighted Average [Member] | Measurement Input, Discount Rate [Member]
Other real estate owned		(7)

X

- Definition

Fair value portion of assets classified as held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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- Definition

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 https://asc.fasb.org/subtopic&trid=2196772

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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