Note 21 - Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2021		Sep. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Unaudited Quarterly Results Of Operations [Abstract]
Interest income	$ 14,739		$ 13,546		$ 12,327		$ 11,809		$ 11,938		$ 11,721		$ 11,380		$ 11,731		$ 52,421	$ 46,770	$ 43,693
Interest expense	3,460		2,167		1,224		1,073		1,130		1,137		1,162		1,214		7,924	4,643	6,445
Net interest income	11,279		11,379		11,103		10,736		10,808		10,584		10,218		10,517		44,497	42,127	37,248
Provision for loan losses	(850)												183		275		(850)	458	1,250
Non-interest income	2,997		484		639		1,611		2,528		1,315		2,534		3,404		5,731	9,781	7,602
Non-interest expense	8,119		7,814		7,746		7,813		8,135		7,790		7,749		7,323		31,492	30,997	28,955
Income before income taxes	7,007		4,049		3,996		4,534		5,201		4,109		4,820		6,323		19,586	20,453	14,645
Provision for income taxes	1,560		634		647		824		1,052		685		951		1,273		3,665	3,961	2,562
Net income	$ 5,447		$ 3,415		$ 3,349		$ 3,710		$ 4,149		$ 3,424		$ 3,869		$ 5,050		$ 15,921	$ 16,492	$ 12,083
Earnings Per Share - basic	$ 1.52	[1]	$ 0.96	[1]	$ 0.94	[1]	$ 1.04	[1]	$ 1.17	[1]	$ 0.96	[1]	$ 1.09	[1]	$ 1.42	[1]	$ 4.47	$ 4.64	$ 3.42
Earnings Per Share - diluted	$ 1.52	[1]	$ 0.96	[1]	$ 0.94	[1]	$ 1.04	[1]	$ 1.17	[1]	$ 0.96	[1]	$ 1.09	[1]	$ 1.42	[1]	$ 4.47	$ 4.64	$ 3.42

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