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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Accounts receivable, allowance for credit loss $ 38,777 $ 12,629
Class of Stock [Line Items]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 100,000,000 100,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, shares issued (in shares) 146,449,688  
Common stock, shares outstanding (in shares) 146,449,688  
Cost of shares (in shares) 254,066 128,074
Series A Preferred Stock    
Class of Stock [Line Items]    
Preferred stock, par value (in dollars per share) $ 0.001  
Preferred stock, shares authorized (in shares) 60,000 60,000
Preferred stock, shares issued (in shares) 60,000 60,000
Common Class A    
Class of Stock [Line Items]    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 1,000,000,000 1,000,000,000
Common stock, shares issued (in shares) 64,726,864 57,776,204
Common stock, shares outstanding (in shares) 64,726,864 57,776,204
Common Class B    
Class of Stock [Line Items]    
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 1,000,000,000 1,000,000,000
Common stock, shares issued (in shares) 6,886,925 6,904,910
Common stock, shares outstanding (in shares) 6,886,925 6,904,910
Special Warrants    
Class of Stock [Line Items]    
Common stock, shares issued (in shares) 74,835,899 81,046,593
Common stock, shares outstanding (in shares) 74,835,899 81,046,593