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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	$ 1,179,000	$ 1,242,000	$ 2,901,000	$ 2,718,000
Proceeds from Sale, Loan, Held-for-Sale			221,880,000	261,171,000
Other Liabilities	33,365,000		33,365,000		$ 31,036,000
Holdback Reserve For Guaranteed Loans [Member]
Other Liabilities	$ 1,800,000		1,800,000		2,000,000
Federal Home Loan Bank of Des Moines [Member]
Proceeds from Sale, Loan, Held-for-Sale			$ 8,500,000
Escrow Holdback Relative to Outstanding Credit Enhancement (CE) Obligation, Percentage	10.00%		10.00%
Escrow Holdback Relative to Outstanding Credit Enhancement (CE) Obligation	$ 39,000		$ 39,000
Federal Home Loan Bank of Des Moines [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Proceeds from Sale, Loan, Held-for-Sale			0		0
Federal Home Loan Bank of Des Moines [Member] | Recourse [Member]
First Loss Account (FLA)	581,000		581,000
Credit Enhancement (CE) Obligation	$ 389,000		$ 389,000
Credit Enhancement (CE) Obligation, Percentage of Outstanding Loans	4.60%		4.60%
Unfunded Loan Commitment [Member]
Financing Receivable, Allowance for Credit Loss	$ 1,600,000		$ 1,600,000		$ 1,400,000
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff (Recovery)	$ (151,000)	$ (77,000)	$ (217,000)	$ (54,000)

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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