Note 2 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Gain on sale of loans	$ 272,293	$ 129,231
Other	14,225	38,888
Total noninterest income	1,019,199	901,170
Salaries and benefits	6,619,148	6,131,107
Occupancy	1,462,077	1,426,701
Data processing fees	2,092,060	1,566,001
Professional fees	815,278	944,932
Advertising	260,440	170,723
Other	1,061,408	1,276,723
Total noninterest expense	12,491,617	11,722,820
Loss from discontinued operations	(1,683,555)	(1,060,754)
Benefit for income taxes	(427,627)	(259,013)
Less: Net loss from discontinued operations	(1,255,928)	(801,741)
Discontinued Operations [Member]
Net interest income	170,782	326,446
Gain on sale of loans	4,813,660	14,292,592
Other	190
Total noninterest income	4,813,850	14,292,592
Salaries and benefits	4,480,025	12,067,023
Occupancy	232,360	674,977
Data processing fees	584,369	1,394,464
Professional fees	107,972	178,906
Advertising	118,801	356,419
Net loss on disposal	844,899
Other	299,761	1,008,003
Total noninterest expense	6,668,187	15,679,792
Loss from discontinued operations	(1,683,555)	(1,060,754)
Benefit for income taxes	(427,627)	(259,013)
Less: Net loss from discontinued operations	$ (1,255,928)	$ (801,741)