Note 18 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Earnings per common share - basic
Net income	$ 4,211	$ 4,277
Preferred stock dividends	91
Net income available to common stockholders	$ 4,120	$ 4,277
Average common shares outstanding (in shares)	2,377,277	2,197,440
Add: Dilutive effects of restricted stock awards (in shares)	18,400	17,128
Average shares and dilutive potential common shares (in shares)	2,395,677	2,214,568
Basic (in dollars per share)	$ 1.73	$ 1.95
Diluted (in dollars per share)	$ 1.72	$ 1.93
Restricted stock awards not considered in computing diluted earnings per share because they were antidilutive (in shares)