Basis of Presentation - Schedule of Other Assets (Long-term) (Details) - USD ($) $ in Thousands  | 
Sep. 30, 2017  | 
Dec. 31, 2016  | 
|---|---|---|
| Other Assets [Abstract] | ||
| Escrow deposit - Apache lawsuit | $ 49,500 | |
| Appeal bond deposits | 6,925 | $ 6,925 | 
| Other | 4,354 | 4,539 | 
| Total other assets | $ 60,779 | $ 11,464 | 
| X | ||||||||||
- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- References No definition available. 
  | 
| X | ||||||||||
- Definition Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer. No definition available. 
  | 
| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
| X | ||||||||||
- Definition Appeal bond deposit assets, noncurrent. No definition available. 
  |