Note 10 - Commitments and Contingencies (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss	$ 31,479,000		$ 31,534,000
Other Liabilities	40,582,000		35,737,000
Holdback Reserve For Guaranteed Loans [Member]
Other Liabilities	1,900,000		2,100,000
Federal Home Loan Bank of Des Moines [Member]
Loans Serviced	$ 8,900,000
Amount to Outstanding Credit Enhancement (CE) Obligation, Percentage	10.00%
Escrow Holdback Relative to Outstanding Credit Enhancement (CE) Obligation	$ 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
Federal Home Loan Bank of Des Moines [Member] \| Recourse [Member]
First Loss Account (FLA)	581,000
Credit Enhancement (CE) Obligation	$ 389,000
Credit Enhancement (CE) Obligation, Percentage of Outstanding Loans	4.40%
Unfunded Loan Commitment [Member]
Financing Receivable, Allowance for Credit Loss	$ 1,500,000		$ 1,500,000
Financing Receivable, Allowance for Credit Loss, Recovery	$ 22,000	$ 249,000

Represents the amount established as A Percentage of Outstanding Credit Enhancement (CE) Obligation

No definition available.

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- Definition

Represents the required credit enhancement (“CE”) obligation.

+ References

No definition available.

+ Details

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- Definition

Represents the credit enhancement (“CE”) obligation as a percentage of the outstanding loans.

+ References

No definition available.

+ Details

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- Definition

Represents the amount established as an escrow holdback relative to the amount of outstanding credit obligation.

+ References

No definition available.

+ Details

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- Definition

Represents the establishment of a first loss account (“FLA”) related to loans.

+ References

No definition available.

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- Definition

Amount of loans serviced as of balance sheet date.

+ References

No definition available.

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- Definition

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

+ References

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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

+ References

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- Definition

Amount of liabilities classified as other.

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