FAIR VALUE MEASUREMENTS (Derivative Financial Instruments) (Details) (Cashless Collar Contract [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 11, 2013 bbl	Aug. 13, 2013 bbl	Jul. 08, 2013 bbl	Jun. 10, 2013 bbl	May 06, 2013 bbl	Apr. 02, 2013 bbl	Mar. 07, 2013 bbl	Feb. 07, 2013 bbl	Jan. 08, 2013 bbl	Dec. 07, 2012 bbl	Nov. 09, 2012 bbl	Oct. 04, 2012 bbl	Sep. 11, 2012 bbl	Aug. 03, 2012 bbl
Derivative [Line Items]
Barrels of oil per Month		148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810	148,810
Floor		75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00	75.00
Cap		124.00	122.60	120.75	120.65	122.00	130.00	125.75	134.70	129.00	124.70	130.00	127.50	137.50	130.00
Assets, Fair Value	$ 60
Liabilities, Fair Value	239
Trade Date, February 7, 2012 [Member]
Derivative [Line Items]
Assets, Fair Value	24
Trade Date, April 2, 2013 [Member]
Derivative [Line Items]
Assets, Fair Value	21
Trade Date, September 11, 2013 [Member]
Derivative [Line Items]
Assets, Fair Value	15
Trade Date September 11, 2012 [Member]
Derivative [Line Items]
Liabilities, Fair Value	3
Trade Date December 7, 2012 [Member]
Derivative [Line Items]
Liabilities, Fair Value	33
Trade Date, March 7, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	10
Trade Date, May 6, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	37
Trade Date, July 8, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	39
Trade Date August 3, 2012 [Member]
Derivative [Line Items]
Liabilities, Fair Value	0
Trade Date October 4, 2012 [Member]
Derivative [Line Items]
Liabilities, Fair Value	14
Trade Date November 9, 2012 [Member]
Derivative [Line Items]
Liabilities, Fair Value	13
Trade Date January 8, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	10
Trade Date, June 10, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	66
Trade Date, August 13, 2013 [Member]
Derivative [Line Items]
Liabilities, Fair Value	$ 14