Note 20 - Disclosures About Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Securities available for sale, at fair value	$ 447,335	$ 283,502
Securities held to maturity	2,004
Equity securities (included in other assets)	1,900	1,600
Reported Value Measurement [Member]
Cash and cash equivalents	172,509	175,888
Interest-bearing time deposits	4,839	6,396
Securities available for sale, at fair value	447,335
Securities held to maturity	2,000
Loans held for sale	2,413	7,941
Loans, net	483,287	500,331
FHLB and other restricted stock	1,988	1,988
Accrued interest receivable	3,430	3,434
Equity securities (included in other assets)	1,881	1,553
Deposits	1,035,562	900,461
Accrued interest payable	97	153
Securities available for sale		283,502
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	172,509	175,888
Interest-bearing time deposits	4,965	6,687
Securities available for sale, at fair value	447,335
Securities held to maturity	2,004
Loans held for sale	2,459	8,101
Loans, net	481,961	506,207
Accrued interest receivable	3,430	3,434
Equity securities (included in other assets)	1,881	1,553
Deposits	1,035,406	901,073
Accrued interest payable	97	153
Securities available for sale		283,502
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	172,509	175,888
Interest-bearing time deposits	0	0
Securities available for sale, at fair value	0
Securities held to maturity	0
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Equity securities (included in other assets)	1,881	1,553
Deposits	0	0
Accrued interest payable	0	0
Securities available for sale		0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0	0
Interest-bearing time deposits	4,965	6,687
Securities available for sale, at fair value	447,335
Securities held to maturity	2,004
Loans held for sale	2,459	8,101
Loans, net	0	0
Accrued interest receivable	3,430	3,434
Equity securities (included in other assets)	0	0
Deposits	0	0
Accrued interest payable	97	153
Securities available for sale		283,502
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	0	0
Interest-bearing time deposits	0	0
Securities available for sale, at fair value	0
Securities held to maturity	0
Loans held for sale	0	0
Loans, net	481,961	506,207
Accrued interest receivable	0	0
Equity securities (included in other assets)	0	0
Deposits	1,035,406	901,073
Accrued interest payable	$ 0	0
Securities available for sale		$ 0

Represents the fair value of accrued interest receivable.

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Represents the fair value of interest payable.

+ References

No definition available.

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Fair value portion of interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

+ References

No definition available.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 320
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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- Definition

Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

+ References

No definition available.

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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.

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