COMMITMENTS AND CONTINGENCIES Commitments and Contigencies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) MBbls MMcf
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	67,941
Dollar Commitment ($ in thousands) | $	$ 84,619
First Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	9,881
Dollar Commitment ($ in thousands) | $	$ 17,622
Second Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	9,854
Dollar Commitment ($ in thousands) | $	$ 17,156
Third Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	9,854
Dollar Commitment ($ in thousands) | $	$ 16,324
Fourth Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	9,854
Dollar Commitment ($ in thousands) | $	$ 16,324
commitments 5 years and beyond [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	28,498
Dollar Commitment ($ in thousands) | $	$ 17,193
Appalachiain Basin
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	47,174
Appalachiain Basin | First Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	7,136
Appalachiain Basin | Second Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	7,117
Appalachiain Basin | Third Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	7,117
Appalachiain Basin | Fourth Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	7,117
Appalachiain Basin | commitments 5 years and beyond [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	18,687
Appalachiain Basin | Supply Contract Expiration Date [Member]
Supply Commitment [Line Items]
Supply Commitments Contract Expiration Date	Aug. 31, 2022
Utica Shale
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	20,767
Utica Shale | First Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	2,745
Utica Shale | Second Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	2,737
Utica Shale | Third Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	2,737
Utica Shale | Fourth Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	2,737
Utica Shale | commitments 5 years and beyond [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf)	9,811
Utica Shale | Supply Contract Expiration Date [Member]
Supply Commitment [Line Items]
Supply Commitments Contract Expiration Date	Jul. 22, 2023
Wattenberg Field
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	10,864
Wattenberg Field | First Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	2,420
Wattenberg Field | Second Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	2,413
Wattenberg Field | Third Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	2,413
Wattenberg Field | Fourth Year Commitment [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	2,413
Wattenberg Field | commitments 5 years and beyond [Member]
Supply Commitment [Line Items]
Oil and Gas Delivery Commitments Volumes (MMcf) | MBbls	1,205
Wattenberg Field | Supply Contract Expiration Date [Member]
Supply Commitment [Line Items]
Supply Commitments Contract Expiration Date	Jun. 30, 2020