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Property and Equipment - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Property Plant And Equipment [Line Items]    
Depreciation expense $ 131 $ 122
Other Property and Equipment | Minimum    
Property Plant And Equipment [Line Items]    
Property and equipment, estimated useful life 3 years  
Other Property and Equipment | Maximum    
Property Plant And Equipment [Line Items]    
Property and equipment, estimated useful life 15 years