| Long-Term Debt (Tables) | 3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Mar. 31, 2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Aggregate Future Principal and Discounts of Interest Bearing Obligations | Payments of Interest Bearing Obligations Aggregate future principal and discounts of the Company’s total interest bearing obligations as of March 31, 2017, are as follows (in thousands): 
 
 
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| Interest Expense and Amortization of Debt Issuance Costs | Amortization of debt issuance costs and discounts are included in interest expense. Interest expense in the condensed consolidated statements of comprehensive loss relates to the following debt instruments (in thousands): 
 
 
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