Note 2 - Acquisition - Unaudited Pro Forma Information (Details) - Kentucky Bancshares [Member] - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020
Net interest income	$ 45,483,000	$ 42,458,000	$ 139,526,000		$ 126,614,000
Provision for credit losses	(1,525,000)	4,718,000	(6,067)	[1]	19,793	[1]
Non-interest income	17,614,000	17,188,000	53,704,000		49,907,000
Non-interest expense	34,558,000	35,238,000	106,361,000	[2]	101,102,000	[2]
Income before taxes	30,064,000	19,690,000	92,936,000		55,626,000
Income tax expense	6,902,000	1,907,000	18,881,000		6,623,000
Net income	$ 23,162,000	$ 17,783,000	$ 74,055,000		$ 49,003,000
Basic (in dollars per share)	$ 0.87	$ 0.67	$ 2.79		$ 1.86
Diluted (in dollars per share)	$ 0.87	$ 0.67	$ 2.77		$ 1.84
Basic weighted average shares outstanding (in shares)	26,485	26,385	26,532		26,356
Diluted weighted average shares outstanding (in shares)	26,726	26,605	26,773		26,562
Provision for credit losses (1)	$ (1,525,000)	$ 4,718,000	$ (6,067)	[1]	$ 19,793	[1]

[1] Excludes $7.4 million in merger related credit loss expense for the nine months ended September 30, 2021, respectively.

[2] Excludes $19.0 million in pre-tax merger expenses for the nine months ended September 30, 2021, respectively.