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Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Allowance for doubtful accounts $ 2,931 $ 2,294
Class A Common stock    
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 2,500,000,000 2,500,000,000
Common stock, shares issued (in shares) 15,180,000 0
Common stock, shares outstanding (in shares) 15,180,000 0
Class B Common stock    
Common stock, par value (in usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 250,000,000 250,000,000
Common stock, shares issued (in shares) 82,110,174 91,737,020
Common stock, shares outstanding (in shares) 82,110,174 91,737,020