Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income	$ 12,961	$ 11,691	$ 23,863	$ 15,951
Basic weighted average shares (in shares)	52,120,272	52,383,842	52,087,626	52,348,912
Effect of dilutive stock options and restricted stock (in shares)	626,927	333,945	502,219	405,133
Diluted weighted average shares (in shares)	52,747,199	52,717,787	52,589,845	52,754,045
Basic (usd per share)	$ 0.25	$ 0.22	$ 0.46	$ 0.30
Diluted (usd per share)	$ 0.25	$ 0.22	$ 0.45	$ 0.30
Anti-dilutive shares (in shares)	1,898,078	2,161,244	1,912,902	1,919,008