Condensed Consolidated Statements of Redeemable Convertible Preferred Units, Members’ Deficit and Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($)
$ in Thousands
Total
Members’ Capital
Common Stock
Class A Common Stock
Common Stock
Class B Common Stock
Common Stock
Class C Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Non-Controlling Interests
Beginning balance (in shares) at Dec. 31, 2017 48,447,880                
Beginning balance at Dec. 31, 2017 $ 405,766                
Increase (Decrease) in Temporary Equity [Roll Forward]                  
Accretion of Series A redeemable convertible preferred units $ 176,275                
Ending balance (in shares) at Sep. 30, 2018 0                
Ending balance at Sep. 30, 2018 $ 0                
Beginning balance (in shares) at Dec. 31, 2017   48,407,645 0 0 0        
Beginning balance at Dec. 31, 2017 (445,077) $ 0 $ 0 $ 0 $ 0 $ 0 $ 25 $ (445,102) $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Foreign currency translation losses, net (97)                
Ending balance (in shares) at Sep. 30, 2018   0 62,310,270 58,566,789 14,198,311        
Ending balance at Sep. 30, 2018 $ 226,274 $ 0 $ 6 $ 6 $ 1 $ 443,182 $ (34) $ (335,863) $ 118,976