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Debt (Tables)
12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Schedule of Principal Payments on Long-Term Debt
The scheduled principal payments on long-term debt for each of the five years subsequent to December 31, 2020 is as follows (amounts in thousands): 
YearPrincipal payment amount
2021$— 
2022— 
202320 
2024— 
2025— 
Total$20