Note 2 - Discontinued Operations - Results of Discontinued Operations (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Gain on sale of loans	$ 31,390	$ 15,043	$ 58,297	$ 122,988
Other	9,835	2,335	20,991	26,941
Total noninterest income	248,002	203,102	472,526	508,639
Salaries and benefits	1,644,543	1,486,626	3,232,069	3,029,092
Occupancy	349,276	351,194	700,692	698,006
Data processing fees	507,933	367,954	992,659	768,954
Professional fees	227,331	216,518	409,490	511,383
Advertising	38,141	31,469	104,198	81,064
Other	269,152	295,000	502,640	594,600
Total noninterest expense	3,096,836	2,800,093	6,087,811	5,784,964
Loss from discontinued operations	(1,132,237)	(168,969)	(1,590,638)	(386,521)
Benefit for income taxes	(279,727)	(42,999)	(392,193)	(95,385)
Less: Net loss from discontinued operations	(852,510)	(125,970)	(1,198,445)	(291,136)
Discontinued Operations [Member]
Net interest income	85,484	97,079	170,782	161,876
Gain on sale of loans	2,095,986	4,044,704	4,813,660	7,290,152
Other	190		190
Total noninterest income	2,096,176	4,044,704	4,813,850	7,290,152
Salaries and benefits	1,919,033	3,372,779	4,480,025	6,060,290
Occupancy	84,314	173,517	232,360	332,656
Data processing fees	282,503	367,471	584,369	689,877
Professional fees	51,993	43,481	107,972	75,672
Advertising	70,469	89,279	118,801	195,710
Net loss on disposal	751,982		751,982
Other	153,603	264,225	299,761	484,344
Total noninterest expense	3,313,897	4,310,752	6,575,270	7,838,549
Loss from discontinued operations	(1,132,237)	(168,969)	(1,590,638)	(386,521)
Benefit for income taxes	(279,727)	(42,999)	(392,193)	(95,385)
Less: Net loss from discontinued operations	$ (852,510)	$ (125,970)	$ (1,198,445)	$ (291,136)