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Long-term Debt (Tables)
 6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Schedule of Maturities of Future Principal Obligations
The following presents maturities of future principal obligations under the PPP Note as of June 30, 2020 (in thousands):

Remainder of 2020$517  
20213,200  
20221,074  
2023—  
2024—  
Thereafter—  
Total$4,791