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Long-term Debt (Tables)
6 Months Ended
Jun. 30, 2020
Debt Disclosure [Abstract]  
Schedule of Maturities of Long-term Debt
Scheduled principal payments on our outstanding debt as of June 30, 2020 under our Loan Agreement, excluding final fee amounts, are as follows (in thousands):
Year ending December 31,
 
Total
2020 (remainder of year)
 
$

2021
 
2,400

2022
 
4,800

2023
 
2,800

Total future principal payments
 
$
10,000