Note 24 - Condensed Parent Company Statements - Statements of Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
NET INCOME	$ 7,331,879	$ 5,157,664	$ 5,594,011
OTHER ITEMS OF COMPREHENSIVE INCOME:
Change in unrealized gain (loss) on investment securities available-for-sale, before income taxes	(1,130,514)	1,182,895	(799,869)
Comprehensive income (loss) of Bank	7,085,316	6,260,712	4,968,726
Parent Company [Member]
NET INCOME	7,331,879	5,157,664	5,594,011
OTHER ITEMS OF COMPREHENSIVE INCOME:
Change in unrealized gain (loss) on investment securities available-for-sale, before income taxes			2,695
Income tax expense related to other items of comprehensive income			(997)
Other comprehensive income (loss)			3,692
Comprehensive income (loss) of Bank	(246,563)	1,103,048	(628,977)
TOTAL COMPREHENSIVE INCOME	$ 7,085,316	$ 6,260,712	$ 4,968,726