Note 23 - Condensed Parent Company Statements - Statements of Comprehensive Income (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
NET INCOME	$ 2,505,634	$ 3,400,310	$ 2,516,182	$ 2,216,016	$ 946,210	$ 1,897,776	$ 1,883,383	$ 2,104,845	$ 10,638,142	$ 6,832,214	$ 9,415,090
Change in unrealized gain (loss) on interest rate swaps, before income taxes									1,777,650	(3,312,874)	(2,899,860)
Other comprehensive income (loss)									2,951	377,657	21,721
Comprehensive income (loss) of Bank									10,641,093	7,209,871	9,436,811
Parent Company [Member]
NET INCOME									10,638,142	6,832,214	9,415,090
Change in unrealized gain (loss) on interest rate swaps, before income taxes									597,363	(620,521)	(560,388)
Income tax expense (benefit) related to other items of comprehensive income									143,367	(140,519)	(142,899)
Other comprehensive income (loss)									453,996	(480,002)	(417,489)
Comprehensive income (loss) of Bank									(451,045)	857,659	439,210
TOTAL COMPREHENSIVE INCOME									$ 10,641,093	$ 7,209,871	$ 9,436,811