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ORGANIZATION AND ACCOUNTING POLICIES (Details 5) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Asset Retirement Obligations    
Fair market value of cash held in escrow that is legally restricted for potential plugging and abandonment liability $ 3,200,000  
Reconciliation of asset retirement obligations    
Balance at beginning of year 25,236,000 15,507,000
Liabilities incurred in current year 1,139,000 261,000
Obligations on properties acquired   3,499,000
Liabilities settled in current year (1,846,000) (1,287,000)
Accretion expense 2,256,000 1,525,000
Revisions in estimated cash flows   5,731,000
Carrying amount $ 26,785,000 $ 25,236,000