Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 20,714	$ 20,501	$ 53,134	$ 60,180
Basic EPS, Shares	81,370	81,992	81,530	81,965
Basic EPS, Per Share Amount	$ 0.25	$ 0.25	$ 0.65	$ 0.73
Effect of restricted stock	$ 0	$ 0	$ 0	$ 0
Effect of restricted stock, Shares	34	48	57	43
Diluted EPS, Net Income	$ 20,714	$ 20,501	$ 53,134	$ 60,180
Diluted EPS, Shares	81,404	82,040	81,587	82,008
Diluted EPS, Per Share Amount	$ 0.25	$ 0.25	$ 0.65	$ 0.73