Note 24 - Condensed Parent Company Statements - Condensed Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 2,315,685	$ 2,550,542	$ 2,428,499	$ 2,120,364	$ 2,384,876	$ 3,934,242	$ (342,984)	$ 1,355,745	$ 9,415,090	$ 7,331,879	$ 5,157,664
Accretion of purchase accounting adjustments									(1,629,721)	(3,407,340)
Stock award plan expense									615,385	517,053	466,469
Prepaid expenses and other assets									(1,520,250)	6,056,391	1,097,510
Net cash provided by operating activities									8,326,806	12,324,856	10,281,837
Net cash used in investing activities									24,354,762	(3,816,782)	(80,800,841)
Proceeds from stock options exercised									90,000	166,230	15,570
Cash dividends paid									(2,313,661)	(2,132,221)	(1,767,486)
Proceeds from issuance of notes payable									7,450,000	5,000,000
Repayment of Hometown Bancshares subordinated debentures									(6,000,000)
Net cash provided by (used in) financing activities									25,868,699	(11,793,362)	98,837,493
Parent Company [Member]
Net income									9,415,090	7,331,879	5,157,664
(Equity in undistributed income) distributions in excess of subsidiaries									(3,454,464)	4,585,747	(4,238,498)
Deferred income taxes									(633,608)	(196,399)
Accretion of purchase accounting adjustments									(109,829)	(65,897)
Stock award plan expense									615,385	517,053	466,469
Prepaid expenses and other assets									(28,124)	(113,711)	(73,584)
Income taxes payable/refundable									157,458	(341,404)	(420,444)
Accrued expenses									(26,374)	(1,360,728)	2,390
Net cash provided by operating activities									5,935,534	10,356,540	893,997
Capital contributions to subsidiary bank										(5,000,000)
Cash paid for acquistion										(4,627,810)
Net cash used in investing activities										(9,627,810)
Proceeds from stock options exercised									90,000	166,230	15,570
Cash dividends paid									(2,313,661)	(2,132,221)	(1,767,486)
Proceeds from issuance of notes payable									7,450,000	5,000,000
Repayment of notes payable									(1,250,000)	(3,000,000)
Repayment of Hometown Bancshares subordinated debentures									(6,000,000)
Treasury Stock purchased									(3,604,879)
Net cash provided by (used in) financing activities									(5,628,540)	34,009	(1,751,916)
Increase (Decrease) in cash									306,994	762,739	(857,919)
Cash, beginning of year				$ 1,476,735				$ 713,996	1,476,735	713,996	1,571,915
Cash, end of year	$ 1,783,729				$ 1,476,735				$ 1,783,729	$ 1,476,735	$ 713,996