Note 22 - Earnings Per Share - Calculation of Diluted Weighted-average Shares Outstanding (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net income from continuing operations	$ 1,966,107	$ 1,875,255
Net loss from discontinued operations	(1,255,928)	(801,741)
Less: Earnings (loss) allocated to participating securities	(11,456)	(24,642)
Net income allocated to common shareholders	$ 698,723	$ 1,048,872
Weighted-average common shares outstanding including participating securities (in shares)	3,298,548	3,410,670
Less: Average participating securities (in shares)	(48,982)	(70,988)
Less: Average unallocated ESOP Shares (in shares)	(164,096)	(176,102)
Average shares (in shares)	3,085,470	3,163,581
Earnings per common share - continuing operations (in dollars per share)	$ 0.64	$ 0.59
Loss per common share - discontinued operations (in dollars per share)	(0.41)	(0.26)
Earnings per common share - Basic (in dollars per share)	$ 0.23	$ 0.33
Net income allocated to common shareholders	$ 698,723	$ 1,048,872
Add: Dilutive effects of assumed exercises of stock options (in shares)	2,766	8,076
Weighted average shares and dilutive potential common shares (in shares)	3,088,236	3,171,655
Diluted earnings per common share - continuing operations (in dollars per share)	$ 0.64	$ 0.59
Diluted loss per common share - discontinued operations (in dollars per share)	(0.41)	(0.26)
Earnings per common share - Diluted (in dollars per share)	$ 0.23	$ 0.33