Note 11 - Fair Value Measurements and Fair Values of Financial Instruments - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Investment in interest-earning time deposits		$ 8,091
FRB long-term borrowings		3,895
Reported Value Measurement [Member]
Investment in interest-earning time deposits	$ 5,569	7,924
Loans held for sale	88,400	107,823
Loans receivable, net	579,154	403,966
Deposits	547,114	447,166
FHLB long-term borrowings	83,022	23,193
Subordinated debt	7,958	7,933
FRB long-term borrowings		3,895
Estimate of Fair Value Measurement [Member]
Investment in interest-earning time deposits	5,635
Loans held for sale	95,437	112,843
Loans receivable, net	553,379	409,203
Deposits	547,151	446,576
FHLB long-term borrowings	82,791	23,231
Subordinated debt	7,911	8,312
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment in interest-earning time deposits	0	0
Loans held for sale	0	0
Loans receivable, net	0	0
Deposits	370,886	267,255
FHLB long-term borrowings	0	0
Subordinated debt	0	0
FRB long-term borrowings		0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment in interest-earning time deposits	0	0
Loans held for sale	95,437	112,843
Loans receivable, net	0	0
Deposits	0	0
FHLB long-term borrowings	0	0
Subordinated debt	0	0
FRB long-term borrowings		0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Investment in interest-earning time deposits	5,635	8,091
Loans held for sale	0	0
Loans receivable, net	553,379	409,203
Deposits	176,265	179,321
FHLB long-term borrowings	82,791	23,231
Subordinated debt	$ 7,911	8,312
FRB long-term borrowings		$ 3,895

The fair value of interest-bearing time deposits.

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- Definition

The fair value amount of long-term Federal Reserve Bank advances.

+ 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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- 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)
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- Definition

Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

+ References

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

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- Definition

The noncurrent portion of Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
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-URI https://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601

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