Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments (Details)

v3.6.0.2
Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Deferred finance costs [1] $ 27,174 $ 17,883
Senior notes | 6.625% Senior notes 2023    
Debt Instrument [Line Items]    
Deferred finance costs 6,000  
Senior notes | 6.000% Senior notes 2024    
Debt Instrument [Line Items]    
Deferred finance costs 10,900  
Senior notes | 6.375% Senior Notes 2025    
Debt Instrument [Line Items]    
Deferred finance costs 10,100  
Carrying value | Senior notes    
Debt Instrument [Line Items]    
Fair value of notes 1,600,000  
Fair value | Senior notes    
Debt Instrument [Line Items]    
Fair value of notes $ 1,600,000  
[1] In accordance with ASU 2015-03, loan issuance cost related to the Notes have been presented as a reduction to the Notes. At December 31, 2016, total unamortized debt issuance costs were $6.0 million for the 2023 Notes, $10.9 million for the 2024 Notes, and $10.1 million for the 2025 Notes. In addition, loan commitment fee costs for the construction loan agreement described immediately below were $0.1 million at December 31, 2016.