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Debt (Tables)
9 Months Ended
Sep. 30, 2021
Debt Disclosure [Abstract]  
Schedule of Long-term Debt
Debt consisted of the following (in thousands):
September 30,December 31,
20212020
PPP Loan Principal$— $2,417 
Less: current portion of long-term debt— 2,014 
Long-term debt, net of current portion $— $403