Notes Payable, Long-Term Debt and Other Obligations (Non Cash Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Debt Disclosure [Abstract]
Amortization of debt discount, net	$ 9,450	$ 6,868	$ 26,059	$ 18,708
Amortization of debt issuance costs	1,650	1,085	4,220	3,073
Non-cash Interest Expense	$ 11,100	$ 7,953	$ 30,279	$ 21,781