Note 19 - Condensed Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Statement of Income Captions [Line Items]
Net income, Before tax amount	$ 1,436	$ 2,838	$ 2,212	$ 5,241	$ 7,007	$ 4,049	$ 3,996	$ 4,534	$ 11,727	$ 19,586	$ 20,453
Net unrealized holding gain/(loss) on available-for-sale securities:
Unrealized holding gain/(loss) arising during the period, Before tax amount									16,388	(98,097)	(11,867)
Reclassification adjustment for loss/(gain) included in net income, Before tax amount									2,058	139	(18)
Unrealized holding loss arising during the period, Before tax amount									(1,693)
Reclassification adjustment for fair value remeasurements included in net income, Before tax amount									(57)
Other comprehensive income/(loss), Before tax amount									16,696	(97,958)	(11,885)
Unrealized holding gain/(loss) arising during the period, Tax expense (benefit)									3,441	(20,600)	(2,492)
Reclassification adjustment for loss/(gain) included in net income, Tax expense (benefit)									432	29	(4)
Unrealized holding loss arising during the period, Tax expense (benefit)									(355)
Reclassification adjustment for fair value remeasurements included in net income, Tax expense (benefit)									(12)
Other comprehensive income/(loss), Tax expense (benefit)									3,506	(20,571)	(2,496)
Unrealized holding gain/(loss) arising during the period, Net of tax amount									12,947	(77,497)	(9,375)
Reclassification adjustment for loss/(gain) included in net income, Net of tax amount									1,626	110	(14)
Unrealized holding loss arising during the period, Net of tax amount									(1,338)
Reclassification adjustment for fair value remeasurements included in net income, Net of tax amount									(45)
Other comprehensive income/(loss), Net of tax amount									13,190	(77,387)	(9,389)
Total comprehensive income (loss), Tax expense (benefit)									5,750	(16,906)	1,465
Net income	$ 1,134	$ 2,344	$ 1,887	$ 4,118	$ 5,447	$ 3,415	$ 3,349	$ 3,710	9,483	15,921	16,492
Total comprehensive income (loss), Net of tax amount									22,673	(61,466)	7,103
Parent Company [Member]
Condensed Statement of Income Captions [Line Items]
Net income, Before tax amount									11,727	19,586	20,453
Net unrealized holding gain/(loss) on available-for-sale securities:
Unrealized holding gain/(loss) arising during the period, Before tax amount									16,388	(98,097)	(11,867)
Reclassification adjustment for loss/(gain) included in net income, Before tax amount									2,058	139	(18)
Unrealized holding loss arising during the period, Before tax amount									(1,693)
Reclassification adjustment for fair value remeasurements included in net income, Before tax amount									(57)
Other comprehensive income/(loss), Before tax amount									16,696	(97,958)	(11,885)
Unrealized holding gain/(loss) arising during the period, Tax expense (benefit)									3,441	(20,600)	(2,492)
Reclassification adjustment for loss/(gain) included in net income, Tax expense (benefit)									432	29	(4)
Unrealized holding loss arising during the period, Tax expense (benefit)									(355)
Reclassification adjustment for fair value remeasurements included in net income, Tax expense (benefit)									(12)
Other comprehensive income/(loss), Tax expense (benefit)									3,506	(20,571)	(2,496)
Unrealized holding gain/(loss) arising during the period, Net of tax amount									12,947	(77,497)	(9,375)
Reclassification adjustment for loss/(gain) included in net income, Net of tax amount									1,626	110	(14)
Unrealized holding loss arising during the period, Net of tax amount									(1,338)
Reclassification adjustment for fair value remeasurements included in net income, Net of tax amount									(45)
Other comprehensive income/(loss), Net of tax amount									13,190	(77,387)	(9,389)
Total comprehensive income (loss), Before tax amount									28,423	(78,372)	8,568
Tax expense (benefit)									2,244	3,665	3,961
Total comprehensive income (loss), Tax expense (benefit)									5,750	(16,906)	1,465
Net income									9,483	15,921	16,492
Total comprehensive income (loss), Net of tax amount									$ 22,673	$ (61,466)	$ 7,103