Note 1 - Basis of Presentation and Significant Accounting Policies - Impact of ASU 2016-13 (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021		Jan. 01, 2021		Dec. 31, 2020
Securities available for sale, fair value		$ 300,349	$ 76,292	[1]	$ 83,358	[2]
Loans		2,400,197	2,165,569
Allowance for credit losses on loans		(30,556)	(27,858)	[1]	(26,182)	[3]	$ (26,182)
Deferred Tax Assets, Net of Valuation Allowance, Total		21,874	19,213		17,493	[4]
Accrued interest receivable - loans		9,279	7,900	[1]	9,052	[5]
Allowance for credit losses on off-balance sheet credit exposures	[6]				66
Retained Earnings (Accumulated Deficit), Ending Balance		$ 292,971	$ 264,824	[1]	237,585	[7]
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member]
Loans					2,146,972
Financial Asset Acquired with Credit Deterioration [Member]
Loans	[5]				39,660
Allowance for credit losses on loans					(5,880)
Accounting Standards Update 2016-13 [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Allowance for credit losses on loans					(57)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Securities available for sale, fair value	[2]				83,358
Allowance for credit losses on loans	[3]				(39,289)
Deferred Tax Assets, Net of Valuation Allowance, Total	[4]				19,306
Accrued interest receivable - loans	[5]				9,109
Allowance for credit losses on off-balance sheet credit exposures	[6]				575
Retained Earnings (Accumulated Deficit), Ending Balance	[7]				231,714
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member]
Loans					2,146,972
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans	[5]				45,535
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Securities available for sale, fair value	[2]				0
Allowance for credit losses on loans					(13,107)	[3]	$ (13,107)
Deferred Tax Assets, Net of Valuation Allowance, Total	[4]				1,813
Accrued interest receivable - loans	[5]				57
Allowance for credit losses on off-balance sheet credit exposures	[6]				509
Retained Earnings (Accumulated Deficit), Ending Balance	[7]				(5,870)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Financial Asset, Other than Financial Asset Acquired with Credit Deterioration [Member]
Loans					0
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans	[5]				$ 5,875

[1] Derived from audited financial statements

[2] Per our analysis no ACL was necessary for investment securities available for sale.

[3] Calculated adjustment to the ACL related to the adoption of ASU 2016-13. Includes additional reserve related to purchased deteriorated loans of $5.88 million.

[4] Effect of deferred tax assets related to the adjustment to the ACL form the adoption of ASU 2016-13 using a 23.37% tax rate.

[5] Accrued interest receivable from acquired credit impaired loans of $57 thousand was reclassed to other assets and was offset by the reclass of the grossed up credit discount on acquired credit impaired loans of $57 thousand that was moved to the ACL for the purchased credit deteriorated loans.

[6] Adjustment to the reserve for unfunded commitments related to the adoption of ASU 2016-13.

[7] Net adjustment to retained earnings related to the adoption of ASU 2016-13.