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Note 14 - Fair Value - Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Securities	$ 210,338,000	$ 85,694,000
Certificates of deposit	186,524,000	206,918,000
Fair Value, Inputs, Level 1 [Member]
Securities	163,103,000	76,553,000
Fair Value, Inputs, Level 2 [Member]
Securities	47,235,000	9,141,000
Fair Value, Inputs, Level 3 [Member]
Securities	0	0
Reported Value Measurement [Member]
Cash and cash equivalents	66,771,000	502,162,000
Securities	210,338,000	85,694,000
Loans receivable, net of allowance for loan losses	1,226,743,000	1,044,207,000
FHLB and FRB stock	7,490,000	7,490,000
Accrued interest receivable	7,338,000	4,648,000
Certificates of deposit	186,524,000	206,918,000
Subordinated Notes	19,634,000	19,590
Borrowings		5,000,000
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	66,771,000	502,162,000
Securities	210,338,000	85,694,000
Loans receivable, net of allowance for loan losses	1,198,616,000	1,039,298,000
Accrued interest receivable	7,338,000	4,648,000
Certificates of deposit	182,398,000	206,530,000
Subordinated Notes	17,800,000	20,240
Borrowings		4,999,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	65,967,000	448,552,000
Securities	163,103,000	76,553,000
Loans receivable, net of allowance for loan losses	0	0
FHLB and FRB stock	0	0
Accrued interest receivable	514,000	79,000
Certificates of deposit	0	0
Subordinated Notes	0	0
Borrowings		0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	804,000	53,610,000
Securities	47,235,000	9,141,000
Loans receivable, net of allowance for loan losses	0	0
FHLB and FRB stock	0	0
Accrued interest receivable	477,000	13,000
Certificates of deposit	182,398,000	206,530,000
Subordinated Notes	17,800,000	20,240
Borrowings		4,999,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	0	0
Securities	0	0
Loans receivable, net of allowance for loan losses	1,198,616,000	1,039,298,000
FHLB and FRB stock	0	0
Accrued interest receivable	6,347,000	4,556,000
Certificates of deposit	0	0
Subordinated Notes	$ 0	0
Borrowings		$ 0

X

- Definition

The fair value disclosure of certificates of deposit liabilities.

+ References

No definition available.

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- Definition

The fair value portion of FHLB and FRB stock.

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- Definition

Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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- Definition

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 https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 45
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

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-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563

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- Definition

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

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- Definition

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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-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

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