Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 19,182	$ 22,361	$ 32,420	$ 39,679
Basic EPS, Shares	81,351	81,968	81,611	81,952
Basic EPS, Per Share Amount	$ 0.24	$ 0.27	$ 0.40	$ 0.48
Effect of restricted stock	$ 0	$ 0	$ 0	$ 0
Effect of restricted stock, Shares	64	59	69	39
Diluted EPS, Net Income	$ 19,182	$ 22,361	$ 32,420	$ 39,679
Diluted EPS, Shares	81,415	82,027	81,680	81,991
Diluted EPS, Per Share Amount	$ 0.24	$ 0.27	$ 0.40	$ 0.48