Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Aggregate Future Principal and Discounts of Interest Bearing Obligations (Details)

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Long-Term Debt - Aggregate Future Principal and Discounts of Interest Bearing Obligations (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
[1]
Aggregate future principal and discounts of total interest bearing obligations - long-term [Abstract]    
Nine months ending December 31, 2017 $ 5,454  
Year ending December 31, 2018 7,545  
Year ending December 31, 2020 15,980  
Long-term debt including current portion, interest, final payment fee, discount and issuance cost 28,979  
Less: interest, discount and issuance cost (2,350)  
Long-term debt including current portion 26,629  
Less: interest bearing obligations – current (12,544) $ (17,855)
Interest bearing obligations – non-current $ 14,085 $ 25,312
[1] The condensed consolidated balance sheet as of December 31, 2016 has been derived from the audited consolidated financial statements as of that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.