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Related-Party Transactions - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Related Party Transaction [Line Items]          
Amount due to related party $ 0   $ 0   $ 0
Number of shares issued as dividend payment         1,786,739
Number of additional common stock outstanding owned by related party         2,534,239
Acquisition Targets | Selling, General and Administrative Expenses          
Related Party Transaction [Line Items]          
Payment to related party $ 0 $ 0 $ 0 $ 100,000