Note 1 - Accounting Policies (Details Textual) $ in Thousands	Mar. 31, 2023 USD ($)	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($)		Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Number of Banking Offices	26
Financing Receivable, Allowance for Credit Loss	$ 24,861		$ 19,555		$ 17,988	$ 18,678
Off-Balance-Sheet, Credit Loss, Liability			377
Deferred Tax Assets, Net of Valuation Allowance			5,315
Retained Earnings (Accumulated Deficit)	$ 225,409		223,664	[1]
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss		$ 5,200	$ 5,192			$ 0
Off-Balance-Sheet, Credit Loss, Liability		305
Deferred Tax Assets, Net of Valuation Allowance		1,200
Retained Earnings (Accumulated Deficit)		$ (4,200)

[1] Derived from audited consolidated financial statements