Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income	$ 13,827	$ 14,085	$ 37,690	$ 30,036
Basic weighted average shares (in shares)	52,111,444	52,238,796	52,086,209	52,315,719
Effect of dilutive stock options and restricted stock (in shares)	610,683	388,745	538,374	399,671
Diluted weighted average shares (in shares)	52,722,127	52,627,541	52,624,583	52,715,390
Basic (usd per share)	$ 0.27	$ 0.27	$ 0.72	$ 0.57
Diluted (usd per share)	$ 0.26	$ 0.27	$ 0.72	$ 0.57
Anti-dilutive shares (in shares)	1,834,379	1,950,343	1,886,728	1,929,453