Stockholders' Equity - Treasury Stock (Details) - USD ($) $ in Thousands, shares in Millions	12 Months Ended		14 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Oct. 28, 2015
Treasury Stock
Authorized amount of common stock repurchase (in dollars)				$ 100,000
Purchase of common stock	$ 13,035	$ 9,222	$ 22,300
Purchase of common stock (in shares)	0.7