Note 7 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Apr. 02, 2018
Goodwill, Ending Balance		$ 1,434,982	$ 1,434,982
Business Acquisition, Goodwill, Expected Tax Deductible Amount		0
Finite-Lived Intangible Assets, Gross, Total		$ 3,520,000	3,520,000
Hometown Bancshares, Inc. [Member]
Goodwill, Ending Balance			$ 1,400,000	$ 1,435,000
Hometown Bancshares, Inc. [Member] | Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life		7 years
Finite-lived Intangible Assets Acquired	$ 3,500,000
Finite-Lived Intangible Assets, Gross, Total		$ 2,700,000