Note 2 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Gain on sale of loans	$ 2,641	$ 31,390	$ 2,641	$ 58,297
Other	19,398	9,835	66,765	20,991
Total noninterest income	(9,230)	248,002	250,666	472,526
Salaries and benefits	1,300,507	1,644,543	3,060,057	3,232,069
Occupancy	351,003	349,276	719,710	700,692
Data processing fees	518,628	507,933	980,455	992,659
Professional fees	141,917	227,331	433,354	409,490
Advertising	43,063	38,141	103,725	104,198
Other	179,607	269,152	380,621	502,640
Total noninterest expense	2,579,133	3,096,836	5,774,258	6,087,811
Loss from discontinued operations		(1,132,237)		(1,590,638)
Benefit for income taxes		(279,727)		(392,193)
Less: Net loss from discontinued operations		(852,510)		(1,198,445)
Discontinued Operations [Member]
Net interest income		85,484		170,782
Gain on sale of loans		2,095,986		4,813,660
Other		190		190
Total noninterest income		2,096,176		4,813,850
Salaries and benefits		1,919,033		4,480,025
Occupancy		84,314		232,360
Data processing fees		282,503		584,369
Professional fees		51,993		107,972
Advertising		70,469		118,801
Net loss on disposal		751,982		751,982
Other		153,603		299,761
Total noninterest expense		3,313,897		6,575,270
Loss from discontinued operations		(1,132,237)		(1,590,638)
Benefit for income taxes		(279,727)		(392,193)
Less: Net loss from discontinued operations		$ (852,510)		$ (1,198,445)