Note 1 - Basis of Presentation - Impact of ASU 2016-13 (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021		Sep. 30, 2021	Jun. 30, 2021	Jan. 01, 2021		Dec. 31, 2020
Securities available for sale, fair value		$ 299,620		$ 76,292	[1]			$ 83,358	[2]
Loans		2,362,733		2,165,569
Allowance for credit losses on loans		(29,388)	$ (29,749)	(27,858)	[1]	$ (29,877)	$ (31,857)	(26,182)	[3]	$ (26,182)
Deferred Tax Assets, Net of Valuation Allowance, Total	[4]							17,493
Accrued interest receivable - loans		8,345		7,900	[1]			9,052	[5]
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	[6]							66
Retained Earnings (Accumulated Deficit), Total		$ 285,096		$ 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
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	[6]							575
Retained Earnings (Accumulated Deficit), Total	[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
Off-Balance-Sheet, Credit Loss, Liability, Ending Balance	[6]							509
Retained Earnings (Accumulated Deficit), Total	[7]							(5,871)
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.