Debt - Recorded Expenses with Respect to Long-term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Interest expense	$ 35,591	$ 31,724	$ 34,138
Debt extinguishment charges	25,006	9,552	13,209
Amortization of debt issuance cost	3,537	3,665	3,623
Commitment fee	1,506	1,575	792
Total	$ 65,640	$ 46,516	$ 51,762