Notes Payable, Long-Term Debt and Other Obligations (Non Cash Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Debt Disclosure [Abstract]
Amortization of debt discount, net	$ 8,653	$ 6,213	$ 16,609	$ 11,840
Amortization of debt issuance costs	1,401	1,022	2,569	1,988
Non-cash Interest Expense	$ 10,054	$ 7,235	$ 19,178	$ 13,828