Note 2 - Acquisition - Unaudited Pro Forma Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021
Commonwealth [Member]
Net interest income		$ 62,376		$ 53,473		$ 173,153		$ 164,579
Provision for credit losses		4,803	[1]	(1,525)	[1]	2,453	[2]	(5,767)	[2]
Non-interest income		24,864		38,094		68,947		97,524
Non-interest expense	[3]	44,873		50,414		136,837		153,407
Income before taxes		37,564		42,678		102,810		114,463
Income tax expense		9,024		9,803		23,038		23,380
Net income		28,540		32,875		79,772		91,083
Less net income attributed to noncontrolling interest		85		90		244		264
Net income available to stockholders		$ 28,455		$ 32,785		$ 79,528		$ 90,819
Basic (in dollars per share)		$ 0.98		$ 1.13		$ 2.73		$ 3.10
Diluted (in dollars per share)		$ 0.97		$ 1.13		$ 2.71		$ 3.10
Basic weighted average shares outstanding (in shares)		29,144		29,049		29,110		29,291
Diluted weighted average shares outstanding (in shares)		29,404		29,031		29,371		29,272
Kentucky Bancshares [Member]
Net interest income				$ 45,483				$ 139,526
Provision for credit losses	[4]			(1,525)				(6,067)
Non-interest income				17,614				53,704
Non-interest expense	[5]			34,558				106,361
Income before taxes				30,064				92,936
Income tax expense				6,902				18,881
Net income				23,162				74,055
Less net income attributed to noncontrolling interest				0				0
Net income available to stockholders				$ 23,162				$ 74,055
Basic (in dollars per share)				$ 0.87				$ 2.79
Diluted (in dollars per share)				$ 0.87				$ 2.77
Basic weighted average shares outstanding (in shares)				26,485				26,532
Diluted weighted average shares outstanding (in shares)				26,726				26,773

[1] Excludes $4.4 million in merger related credit loss expense for the nine months ended September 30, 2022. Excludes $7.4 million in merger related credit loss expense for the nine months ended September 30, 2021, respectively

[2] Excludes $4.4 million in merger related credit loss expense for the nine months ended September 30, 2022. Excludes $7.4 million in merger related credit loss expense for the nine months ended September 30, 2021, respectively.

[3] Excludes $24.1 million in merger expenses for the nine months ended September 30, 2022. Excludes $525,000 and $18.5 million in merger expenses for the three and nine months ended September 30, 2021, respectively.

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

[5] Excludes $18.5 million in pre-tax merger expenses for the nine months ended September 30, 2021.