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Property and Equipment (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Property and Equipment (Details) [Line Items]          
Depreciation expense $ 688,000 $ 576,000 $ 2,105,000 $ 1,920,000  
Property, Plant and Equipment [Member]          
Property and Equipment (Details) [Line Items]          
Accumulated depreciation $ 32,000   $ 32,000   $ 28,000