Note 12 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 12,489	$ 11,537
Net income, Weighted avg shares (in shares)	8,102,442	8,081,482
Net income, Per share amount (in dollars per share)	$ 1.54	$ 1.43
Stock options, Weighted avg shares (in shares)	54	1,791
Non-vested restricted stock, Weighted avg shares (in shares)	14,131	16,825
Total dilutive shares, Weighted avg shares (in shares)	14,185	18,616
Net income per diluted share, Weighted avg shares (in shares)	8,116,627	8,100,098
Net income per diluted share (in dollars per share)	$ 1.54	$ 1.42