Note 4 - Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income Available to Common Shares	$ 3,900	$ 1,682	$ 10,646	$ 5,710
Weighted Average Common Shares Outstanding (in shares)	11,533,374	6,932,570	10,795,989	6,926,684
Dilutive Effect of Stock Options and Warrants (in shares)	460,360	382,782	460,360	382,782
Weighted Average Dilutive Common Shares (in shares)	11,993,734	7,315,352	11,256,349	7,309,466
Basic Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.34	$ 0.24	$ 0.99	$ 0.82
Diluted Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.33	$ 0.23	$ 0.95	$ 0.78