Stockholders' Equity - Share Repurchase Program (Details) - USD ($)	2 Months Ended	12 Months Ended
	Feb. 26, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 25, 2016	Jul. 21, 2015
Class of Stock [Line Items]
Stock Repurchase Program, Additional Amount Authorized						$ 150,000,000
Common stock repurchase authorized amount						$ 205,000,000
Common stock repurchased and retired, shares		2,326,493	0	171,263
Common stock repurchased and retired, weighted average price per share		$ 66.50	$ 0.00	$ 45.54
Common stock repurchased and retired, total value		$ 154,700,000	$ 0	$ 7,800,000
Common stock repurchase authorization amount available		$ 93,400,000
Subsequent Event
Class of Stock [Line Items]
Stock Repurchase Program, Additional Amount Authorized					$ 200,000,000
Stock Repurchased During Period, Shares	1,868,487
Stock Repurchased During Period, Value	$ 93,400,000