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Intangible Assets - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]    
Intangible assets carrying value $ 231,000 $ 287,000
Goodwill $ 40,000 $ 40,000
Maximum [Member]    
Acquired Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 10 years