DERIVATIVE INSTRUMENTS (Narrative) (Details) - 2019
|9 Months Ended|
Sep. 30, 2018
$ / MMBTU
|Derivative [Line Items]|
|Daily volume (in MMBtu) | MMBTU||100,000|
|Weighted average price (in usd per MMBtu or Bbl) | $ / MMBTU||3.05|
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.