Long-term Debt, Net - Schedule of Long-term Debt, Net (Parenthetical) (Details)	Dec. 31, 2016
10.75% first lien notes due 2021
Debt instrument
Effective interest rate	12.60%
7.75% second lien notes due 2023
Debt instrument
Effective interest rate	9.60%
2.625% convertible senior notes due 2019
Debt instrument
Effective interest rate	8.40%
3.125% convertible senior notes due 2024
Debt instrument
Effective interest rate	9.00%