CONCENTRATIONS - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
Unusual Risk or Uncertainty [Line Items]
Maximum amount of credit risk exposure	$ 30.5
GOM Deep Water, Conventional Shelf and Deep Gas Properties
Unusual Risk or Uncertainty [Line Items]
Production associated with properties	88.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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