Note 20 - Segments (Details Textual) - USD ($)	Jun. 30, 2021	Jun. 01, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	May 01, 2019	Dec. 31, 1996
Goodwill, Ending Balance	$ 136,529,000		$ 12,513,000	$ 12,513,000	$ 12,513,000	$ 12,513,000	$ 12,513,000
King Bancorp Inc. [Member]
Goodwill, Ending Balance								$ 11,800,000
Kentucky Bancshares [Member]
Goodwill, Ending Balance	124,000,000	$ 0
Commercial Banking [Member] | Indiana Bank [Member]
Goodwill, Ending Balance									$ 682,000
Commercial Banking [Member] | Operating Segments [Member]
Goodwill, Ending Balance	$ 136,500,000
Commercial Banking [Member] | Operating Segments [Member] | Indiana Bank [Member]
Goodwill, Ending Balance									$ 682,000
Commercial Banking [Member] | Operating Segments [Member] | King Bancorp Inc. [Member]
Goodwill, Ending Balance								$ 11,800,000
Commercial Banking [Member] | Operating Segments [Member] | Kentucky Bancshares [Member]
Goodwill, Ending Balance		$ 124,000,000.0