DERIVATIVE FINANCIAL INSTRUMENTS (Details) (Commodity derivatives)	Mar. 31, 2013
Oil | Brent Put | 04/01/13 - 09/30/13
Derivative financial instruments
Volume in BBl or Mbtu per day	1,375
Price per Mcf or Bbl	70
Natural Gas | Swap | 04/01/13 - 12/31/13
Derivative financial instruments
Volume in BBl or Mbtu 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 Mbtu per day	7,000
Price per Mcf or Bbl	3.79