Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses (Schedule of Accrued Expenses) (Details)

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Accrued Expenses (Schedule of Accrued Expenses) (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Accrued Liabilities, Current [Abstract]    
Sales and use tax $ 2,019 $ 791
Professional fees 1,820 120
Payroll and related benefits 348 415
Other 245 256
Total accrued expenses $ 4,432 $ 1,582