Note 2 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Gain on sale of loans		$ 26,907
Other	47,367	11,157
Total noninterest income	259,896	186,161
Salaries and benefits	1,759,550	1,587,526
Occupancy	368,707	351,416
Data processing fees	461,827	484,725
Professional fees	291,437	182,159
Advertising	60,662	66,057
Other	201,014	195,126
Total noninterest expense	3,195,125	2,952,612
Loss from discontinued operations		(458,401)
Benefit for income taxes		(112,466)
Less: Net loss from discontinued operations		(345,935)
Discontinued Operations [Member]
Net interest income		85,298
Gain on sale of loans		2,717,674
Other
Total noninterest income		2,717,674
Salaries and benefits		2,560,992
Occupancy		148,046
Data processing fees		301,866
Professional fees		55,979
Advertising		48,332
Other		146,158
Total noninterest expense		3,261,373
Loss from discontinued operations		(458,401)
Benefit for income taxes		(112,466)
Less: Net loss from discontinued operations		$ (345,935)