Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Long-term Liabilities - Schedule of Long Term Liabilities (Details)

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Accrued Expenses and Long-term Liabilities - Schedule of Long Term Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Payables and Accruals [Abstract]    
Warrant liability $ 33 $ 82
Uncertain tax positions 4,210 4,081
Deferred revenue 239 269
Other 75 141
Total other long-term liabilities $ 4,557 $ 4,573