Note 2 - Acquisition (Details Textual) - USD ($)		12 Months Ended
	Apr. 02, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill, Ending Balance		$ 1,434,982
Net Income (Loss) Attributable to Parent, Total		7,331,879	5,157,664	$ 5,594,011
Hometown Bancshares, Inc. [Member]
Net Income (Loss) Attributable to Parent, Total			$ 417,000
Hometown Bancshares, Inc. [Member]
Business Acquisition, Share Price	$ 20
Business Combination, Consideration Transferred, Total	$ 4,628,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total	179,965,000
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Net	143,919,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	161,248,000
Goodwill, Ending Balance	$ 1,435,000	1,434,982
Business Combination, Acquired Receivables, Remaining Discount		$ 2,450,000