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Property and Equipment - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 100,000 $ 19,800 $ 151,000 $ 58,000