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Shareholders' Equity and Noncontrolling Interest - Warrants (Details) - $ / shares
9 Months Ended
Sep. 30, 2017
Mar. 01, 2017
Public Warrants    
Class of Warrant or Right [Line Items]    
Warrant exercise price (in dollars per share)   $ 0.01
Public Warrants | Common Stock Class A    
Class of Warrant or Right [Line Items]    
Warrants exercised (in shares) 6,235,790  
Warrants To Purchase Class A Common Stock, Private Placement    
Class of Warrant or Right [Line Items]    
Warrants outstanding (in shares) 8,000,000  
Private Placement Warrants    
Class of Warrant or Right [Line Items]    
Warrant exercise price (in dollars per share)   $ 11.50