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Note 1 - Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2021 USD ($)
Number of Operating Segments	3
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest	$ 0	$ 0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	131	213
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	0	0	$ 0
Retained Earnings (Accumulated Deficit)	273,723	272,705
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	59,929	35,843	31,146		$ 31,572
Off-Balance-Sheet, Credit Loss, Liability	7,500	7,400
Goodwill, Impairment Loss	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	0	0	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff	$ 0	$ 0	0
Cumulative Effect, Period of Adoption, Adjustment [Member] \| Accounting Standards Update 2016-13 [Member]
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest				$ 172
Retained Earnings (Accumulated Deficit)				(4,500)
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest			$ 3,857	3,900
Off-Balance-Sheet, Credit Loss, Liability				$ 1,900
Commercial and Industrial Portfolio Segments [Member] \| Loans Unsecured by Real Estate [Member] \| Financing Receivables, Total [Member]
Concentration Risk, Percentage	16.70%	20.30%