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Note 1 - Basis of Presentation - Schedule of Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Carrying amount	$ 1,719,060		$ 1,723,471			$ 1,401,278
ACL on loans	(11,867)	$ (11,270)	(10,525)	$ (7,932)	$ (7,956)	(5,646)
ACL on debt securities, held to maturity	(7)		(5)			0
Deferred tax assets, net						6,639
ACL on off-balance sheet credit exposures	340	362	281	$ 258	381	0
Retained earnings	$ 138,325		140,017			139,249
Cumulative Effect, Period of Adoption, Adjustment [Member]
ACL on loans						(2,196)
ACL on off-balance sheet credit exposures		$ 0	$ 0		$ 0	571
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Carrying amount						341
ACL on loans						(2,196)
ACL on debt securities, held to maturity						(7)
Deferred tax assets, net						511
ACL on off-balance sheet credit exposures						571
Retained earnings						(1,922)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Accounting Standards Update 2016-13 [Member]
Carrying amount						1,401,619
ACL on loans						(7,842)
ACL on debt securities, held to maturity						(7)
Deferred tax assets, net						7,150
ACL on off-balance sheet credit exposures						571
Retained earnings						$ 137,327

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