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
Mar. 31, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Warrant liability $ 62 $ 21
Uncertain tax positions 4,396 4,342
Deferred revenue 123 136
Other 111 138
Total other long-term liabilities $ 4,692 $ 4,637