Note 4 - Earnings Per Common Share - Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income Available to Common Shares	$ 5,659	$ 3,108
Weighted Average Common Shares Outstanding (in shares)	13,287,560	10,232,933
Dilutive Effect of Stock Options and Warrants (in shares)	365,565	345,822
Weighted Average Dilutive Common Shares (in shares)	13,653,125	10,578,755
Basic Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.43	$ 0.30
Diluted Earnings Per Common Share From Net Income Available to Common Shares (in dollars per share)	$ 0.41	$ 0.29