Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 10,902	$ 4,260
Basic weighted average shares (in shares)	51,992,150	52,433,902
Effect of dilutive stock options and restricted stock (in shares)	377,510	476,321
Diluted weighted average shares (in shares)	52,369,660	52,910,223
Basic (usd per share)	$ 0.21	$ 0.08
Diluted (usd per share)	$ 0.21	$ 0.08
Anti-dilutive shares (in shares)	1,927,727	1,676,773