Note 5 - Allowance for Credit Losses - Summary of Modified Financing Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Amortized Cost Basis	$ 48,534	$ 16,315
Residential Portfolio Segment [Member] \| Single Family [Member] \| Extended Maturity [Member]
Amortized Cost Basis	$ 3,813
% of Total Loan Type	1.90%
Term increase (Month)	6 months
Residential Portfolio Segment [Member] \| Multifamily [Member] \| Contractual Interest Rate Reduction [Member]
Amortized Cost Basis	$ 9,570
% of Total Loan Type	4.10%
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Extended Maturity on Interest Only Payments [Member]
Amortized Cost Basis		$ 16,000
% of Total Loan Type		3.50%
Term increase (Month)		6 months
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land Development [Member] \| Extended Maturity and Interest Rate Reduction [Member]
Amortized Cost Basis	$ 31,153
% of Total Loan Type	7.90%
Term increase (Month)	24 months
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Extended Maturity [Member]
Amortized Cost Basis		$ 315
% of Total Loan Type		0.40%
Term increase (Month)		3 months
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Extended Maturity on Interest Only Payments [Member]
Amortized Cost Basis	$ 3,998
% of Total Loan Type	4.80%
Term increase (Month)	7 months

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

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Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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