Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-Term Debt And Financing Lease Obligations	$ 491,279	$ 443,092
Less current portion	(24,522)	(13,872)
Long term portion	466,757	429,220
Convertible notes, net
Debt Instrument [Line Items]
Long-Term Debt And Financing Lease Obligations	168,884	164,438
Royalty financing, net
Debt Instrument [Line Items]
Long-Term Debt And Financing Lease Obligations	46,619	46,921
Facility lease obligation
Debt Instrument [Line Items]
Long-Term Debt And Financing Lease Obligations	$ 275,776	$ 231,733