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Debt - Debt Refinancing and Senior Notes Due 2019 Exchange Transaction (Details) - USD ($)
3 Months Ended
Apr. 21, 2017
Apr. 01, 2017
Mar. 01, 2017
Apr. 15, 2016
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2017
Feb. 06, 2017
Debt Instrument [Line Items]                
Repurchase payments of long term debt         $ 50,335,000 $ 133,079,000    
Common Stock | Scenario, Forecast                
Debt Instrument [Line Items]                
Required amount of proceeds received in public offering for exchange agreement to occur   $ 400,000,000            
Gross proceeds from initial public offering, percent of equity value   10.00%            
Common Stock | Class A Common Stock                
Debt Instrument [Line Items]                
Issuance of Class A common stock (in shares)         35,000,000      
IPO | Class A Common Stock                
Debt Instrument [Line Items]                
Sale of common stock in IPO (in dollars per share)               $ 14.00
Senior Notes | Senior Notes Due 2019                
Debt Instrument [Line Items]                
Common stock shares issuable, percentage of aggregate principal amount       104.625%        
Amount to be divided by initial public offering price per share, to determine number of shares authorized for exchange       $ 261,600,000        
Repurchase of aggregate principal amount     $ 22,556,000          
Repurchase price, percent     104.625%          
Repurchase payments of long term debt     $ 23,599,000          
Senior Notes | Senior Notes Due 2019 | Scenario, Forecast                
Debt Instrument [Line Items]                
Amount of debt to be exchanged   $ 250,000,000            
Issuance of Class A common stock (in shares)   18,683,000            
Period for repurchase of additional principal amount   60 days            
Amount able to be purchased after IPO   $ 62,500,000            
Subsequent Event | Convertible Debt | Exchanged Notes                
Debt Instrument [Line Items]                
Amount of debt to be exchanged $ 250,000,000              
Subsequent Event | Senior Notes | Senior Notes Due 2019                
Debt Instrument [Line Items]                
Interest rate             9.25%