Accrued Expenses, Long-Term Debt, Commitments and Contingencies (Details 4) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Long-Term Debt
Years Ending December 31, 2017	$ 8,757
Years Ending December 31, 2018	4,055
Long-term debt	12,812
Less interest	(547)
Less additional payments due upon maturity	(1,500)
Less unamortized debt discount and debt issuance costs	(77)
Less current portion of long–term debt	(8,187)	$ (7,550)
Long–term debt, net of current portion	2,501	$ 10,688
Operating Leases
Years Ending December 31, 2017	1,237
Years Ending December 31, 2018	2,116
Years Ending December 31, 2019	2,278
Years Ending December 31, 2020	2,346
Years Ending December 31, 2021	2,417
Years Ending December 31, 2022	2,489
Years Ending December 31, 2023	1,282
Total	14,165
Total
Years Ending December 31, 2017	9,994
Years Ending December 31, 2018	6,171
Years Ending December 31, 2019	2,278
Years Ending December 31, 2020	2,346
Years Ending December 31, 2021	2,417
Years Ending December 31, 2022	2,489
Years Ending December 31, 2023	1,282
Total	$ 26,977