Stockholders' Equity Share Repurchase Program (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Number of shares authorized to be repurchased under stock repurchase program (in shares)	37,500,000
Number of shares repurchased and retired to date (in shares)	12,174,300
Cost of shares repurchased and retired to date	$ 201,500
Repurchase of common stock (in shares)	105,300	0
Repurchase of common stock	$ 1,064	$ 0