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Note 10 - Fair Value Measurements - Schedule of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Certificates of deposit at other financial institutions	$ 12,001	$ 24,167
Loans receivable, at fair value	49,373	25,668
FHLB stock, at cost	9,504	2,114
Loans Receivable, Fair Value Disclosure	13,861	15,088
Accrued interest receivable	14,014	14,005
Borrowings	163,806	93,746
Subordinated notes, excluding unamortized debt issuance costs	50,000	50,000
Interest Rate Swap [Member]
Derivative asset	1,990	6,495
Derivative liabilities, fair value	1,175	375
Mortgage Servicing Rights [Member]
Servicing Asset at Fair Value, Amount	19,900	38,200
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member]
Cash and cash equivalents	40,340	65,691
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Certificates of Deposit [Member]
Certificates of deposit at other financial institutions	12,001	24,167
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	40,340	65,691
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Certificates of Deposit [Member]
Certificates of deposit at other financial institutions	12,001	24,167
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member]
Securities available-for-sale	228,199	292,933
Securities held-to-maturity, gross	8,500	8,500
Loans receivable, at fair value	49,373	25,668
FHLB stock, at cost	9,504	2,114
Loans Receivable, Fair Value Disclosure	13,861	15,088
Accrued interest receivable	14,014	14,005
Deposits	2,427,331	2,522,323
Borrowings	163,806	93,746
Subordinated notes, excluding unamortized debt issuance costs	50,000	50,000
Accrued interest payable	2,349	5,473
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Interest Rate Swap [Member]
Derivative asset	1,943	6,431
Derivative liabilities, fair value	1,175	375
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Dealer Offsets to Customer Swap [Member]
Derivative asset	47	64
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Customer Swap [Member]
Derivative liabilities, fair value	46	63
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Forward TBA Mortgage-Backed Securities [Member]
Derivative asset	61	284
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Securities available-for-sale	228,199	292,933
Securities held-to-maturity, gross	7,983	7,666
Loans receivable, at fair value	49,373	25,668
FHLB stock, at cost	9,504	2,114
Loans Receivable, Fair Value Disclosure	13,861	15,088
Accrued interest receivable	14,014	14,005
Deposits	2,429,371	2,515,026
Borrowings	163,723	93,416
Subordinated notes, excluding unamortized debt issuance costs	45,514	43,480
Accrued interest payable	2,349	5,473
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member]
Derivative asset	1,943	6,431
Derivative liabilities, fair value	1,175	375
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Dealer Offsets to Customer Swap [Member]
Derivative asset	47	64
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Customer Swap [Member]
Derivative liabilities, fair value	46	63
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Forward TBA Mortgage-Backed Securities [Member]
Derivative asset	61	284
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member]
Financing Receivable, before Allowance for Credit Loss	2,481,068	2,417,927
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] | Mortgage Servicing Rights [Member]
Servicing Asset at Fair Value, Amount	8,739	9,090
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] | Mortgage Servicing Right, Held for Sale [Member]
Servicing Asset at Fair Value, Amount	0	8,086
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] | Interest Rate Lock Commitments [Member]
Derivative asset	292	0
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] | Mandatory and Best Effort Forward Commitments [Member]
Derivative liabilities, fair value	77	188
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]
Financing Receivable, before Allowance for Credit Loss	2,353,912	2,276,397
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Mortgage Servicing Rights [Member]
Servicing Asset at Fair Value, Amount	19,901	20,552
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Mortgage Servicing Right, Held for Sale [Member]
Servicing Asset at Fair Value, Amount	0	17,611
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Interest Rate Lock Commitments [Member]
Derivative asset	292	0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Mandatory and Best Effort Forward Commitments [Member]
Derivative liabilities, fair value	$ 77	$ 188

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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).

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