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Note 9 - Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss	$ 31,238,000		$ 31,238,000		$ 31,534,000
Other Liabilities	37,113,000		37,113,000		35,737,000
Holdback Reserve For Guaranteed Loans [Member]
Other Liabilities	2,000,000		2,000,000		2,100,000
Federal Home Loan Bank of Des Moines [Member]
Loans Serviced	$ 8,800,000		$ 8,800,000
Amount 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, Equal to or Greater than 90 Days Past Due [Member]
Loans Serviced	0		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	4.40%		4.40%
Unfunded Loan Commitment [Member]
Financing Receivable, Allowance for Credit Loss	$ 1,600,000		$ 1,600,000		$ 1,500,000
Financing Receivable, Allowance for Credit Loss, Recovery	$ 77,000	$ 347,000	$ 54,000	$ 596,000

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- Definition

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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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