v3.5.0.2
Debt - 2023 Notes (Details) - USD ($)
6 Months Ended
Jun. 10, 2016
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Debt Instrument [Line Items]        
Unamortized discount   $ 16,038,000   $ 0
Proceeds on issuance of 2023 Notes, net of original issue discount   628,869,000 $ 0  
Unamortized debt issuance costs   $ 7,845,000   $ 227,000
Senior Notes | 2023 Notes        
Debt Instrument [Line Items]        
Debt instrument face amount $ 645,000,000.0      
Debt instrument, percentage rate 9.25% 9.25%    
Unamortized discount $ 16,100,000 $ 16,038,000    
Proceeds on issuance of 2023 Notes, net of original issue discount 622,900,000      
Unamortized debt issuance costs $ 7,900,000      
Interest payable   3,500,000    
Senior Notes | 2023 Notes | Level 2        
Debt Instrument [Line Items]        
Fair value of debt   $ 656,300,000