Note 12 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 11,537	$ 9,094
Net income, Weighted avg shares (in shares)	8,081,482	8,060,686
Net income, Per share amount (in dollars per share)	$ 1.43	$ 1.13
Stock options, Weighted avg shares (in shares)	1,791	3,978
Non-vested restricted stock, Weighted avg shares (in shares)	16,825	16,833
Total dilutive shares, Weighted avg shares (in shares)	18,616	20,811
Net income per diluted share, Weighted avg shares (in shares)	8,100,098	8,081,497
Net income per diluted share (in dollars per share)	$ 1.42	$ 1.13