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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Allowance for doubtful accounts $ 591 $ 717
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized 100,000,000 100,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Class A Common Stock    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 1,000,000,000 1,000,000,000
Common stock, shares issued 47,293,775 40,719,189
Common stock, shares outstanding 47,293,775 40,719,189
Class B Common Stock    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 4,150,583 8,069,610
Common stock, shares outstanding 4,150,583 8,069,610