Note 21 - Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ 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
Unaudited Quarterly Results Of Operations [Abstract]
Interest income	$ 19,257		$ 18,497		$ 15,865		$ 15,463		$ 14,739		$ 13,546		$ 12,327		$ 11,809		$ 69,082	$ 52,421	$ 46,770
Interest expense	9,065		8,284		6,532		5,046		3,460		2,167		1,224		1,073		28,927	7,924	4,643
Net interest income	10,192		10,213		9,333		10,417		11,279		11,379		11,103		10,736		40,155	44,497	42,127
Provision for credit losses																	(844)	(850)	458
Non-interest income	283		1,755		1,580		1,219		2,997		484		639		1,611		4,837	5,731	9,781
Non-interest expense	8,746		8,671		8,492		8,200		8,119		7,814		7,746		7,813		34,109	31,492	30,997
Income before income taxes	1,436		2,838		2,212		5,241		7,007		4,049		3,996		4,534		11,727	19,586	20,453
Provision for income taxes	302		494		325		1,123		1,560		634		647		824		2,244	3,665	3,961
Net income	$ 1,134		$ 2,344		$ 1,887		$ 4,118		$ 5,447		$ 3,415		$ 3,349		$ 3,710		$ 9,483	$ 15,921	$ 16,492
Earnings Per Share - basic	$ 0.31	[1]	$ 0.65	[1]	$ 0.52	[1]	$ 1.15	[1]	$ 1.52	[1]	$ 0.96	[1]	$ 0.94	[1]	$ 1.04	[1]	$ 2.63	$ 4.47	$ 4.64
Earnings Per Share - diluted	$ 0.31	[1]	$ 0.65	[1]	$ 0.52	[1]	$ 1.15	[1]	$ 1.52	[1]	$ 0.96	[1]	$ 0.94	[1]	$ 1.04	[1]	$ 2.63	$ 4.47	$ 4.64

[1] Due to rounding, quarterly earnings per share may not sum to annual earnings per share