DERIVATIVE FINANCIAL INSTRUMENTS (Details) (Commodity derivatives)	Sep. 30, 2013
Oil | Brent Swap | 01/01/14 - 12/31/14
Derivative financial instruments
Volume in BBl or MMBtu per day	800
Price per Mcf or Bbl	102.12
Oil | Brent Swap | 10/01/13 - 09/30/14
Derivative financial instruments
Volume in BBl or MMBtu per day	700
Price per Mcf or Bbl	104.30
Natural Gas | Swap | 07/01/13 - 12/31/13
Derivative financial instruments
Volume in BBl or MMBtu per day	7,000
Price per Mcf or Bbl	3.39
Natural Gas | Swap | 01/01/14 - 12/31/14
Derivative financial instruments
Volume in BBl or MMBtu per day	7,000
Price per Mcf or Bbl	3.79
Natural Gas | Swap | 07/01/13 - 12/31/14
Derivative financial instruments
Volume in BBl or MMBtu per day	2,000
Price per Mcf or Bbl	4.18