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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Other information    
Operating cash flows from operating leases $ (255) $ (244)
Weighted-average discount rate - operating leases 12.00% 12.00%
Minimum    
Other information    
Weighted-average remaining lease term - operating leases 2 years 4 months 24 days 10 months 24 days
Maximum    
Other information    
Weighted-average remaining lease term - operating leases 8 years 10 months 24 days 10 years