Note 4 - Earnings Per Common Share - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income Available to Common Shares	$ 2,052	$ 841	$ 4,028	$ 2,245
Weighted Average Common Shares Outstanding (in shares)	6,932,570	7,037,413	6,923,692	7,037,207
Dilutive Effect of Stock Options and Warrants (in shares)	271,902	311,308	271,902	311,308
Weighted Average Dilutive Common Shares (in shares)	7,204,472	7,348,721	7,195,594	7,348,515
Basic Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.30	$ 0.12	$ 0.58	$ 0.32
Diluted Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.28	$ 0.11	$ 0.56	$ 0.31