Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 17,318	$ 13,378
Basic EPS, Shares	81,936	83,309
Basic EPS, Per Share Amount	$ 0.21	$ 0.16
Effect of restricted stock	$ 0	$ 0
Effect of restricted stock, Shares	20	40
Diluted EPS, Net Income	$ 17,318	$ 13,378
Diluted EPS, Shares	81,956	83,349
Diluted EPS, Per Share Amount	$ 0.21	$ 0.16