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Accrued Expenses and Long-Term Liabilities - Schedule of Other Long Term Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Payables and Accruals [Abstract]    
Uncertain tax positions $ 3,641 $ 3,594
DOJ settlement (indemnified by RedPath) 250
Derivative liability 51
Long-term liabilities $ 3,692 $ 3,844