Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Common Share
Net income	$ 4,079	$ 4,533	$ 12,866	$ 12,695
Basic:
Weighted average shares outstanding	26,274	22,714	26,215	21,430
Earnings Per Share, Basic	$ 0.16	$ 0.20	$ 0.49	$ 0.59
Diluted:
Effect of dilutive securities - options	277	388	266	298
Weighted Average Number of Shares Outstanding, Diluted, Total	26,551	23,102	26,481	21,728
Earnings Per Share, Diluted	$ 0.15	$ 0.20	$ 0.49	$ 0.58