Debt - Summary of Repurchases of 2010 Convertible Notes (Details) - USD ($) $ in Thousands				3 Months Ended	9 Months Ended
	Sep. 02, 2016	Apr. 08, 2016	Mar. 15, 2016	Sep. 30, 2016	Sep. 30, 2016
Debt Instrument [Line Items]
Loss on repurchase of convertible notes				$ 332	$ 8,651
Senior Subordinated Convertible Notes 2010
Debt Instrument [Line Items]
Aggregate Principal Amount Repurchased	$ 9,100	$ 66,200	$ 40,000	115,300	115,300
Total Purchase Price	17,200	125,800	72,600	$ 215,600	215,600
Loss on repurchase of convertible notes	$ 300	$ 5,100	$ 3,200		$ 8,600