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Derivative Instruments (Schedule Of Derivative Instruments) (Details) | Dec. 31, 2015 MMBTU / d $ / MMBTU
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January 2016 - March 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 415,000
Weighted Average Price | $ / MMBTU | 3.56
April 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 425,000
Weighted Average Price | $ / MMBTU | 3.52
May 2016 - June 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 355,000
Weighted Average Price | $ / MMBTU | 3.42
July 2016 - September 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 375,000
Weighted Average Price | $ / MMBTU | 3.38
October 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 405,000
Weighted Average Price | $ / MMBTU | 3.33
November 2016 - December 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 430,000
Weighted Average Price | $ / MMBTU | 3.30
January 2017 - March 2017 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 317,500
Weighted Average Price | $ / MMBTU | 3.25
April 2017 - June 2017 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 272,500
Weighted Average Price | $ / MMBTU | 3.31
July 2017 - December 2017 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 210,000
Weighted Average Price | $ / MMBTU | 3.12
January 2018 - December 2018 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 160,000
Weighted Average Price | $ / MMBTU | 3.01
January 2019 - March 2019 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 20,000
Weighted Average Price | $ / MMBTU | 3.37
ARGUS LLS | January 2016 - June 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 1,500
Weighted Average Price | $ / MMBTU | 63.03
NYMEX WTI | January 2016 - June 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 1,000
Weighted Average Price | $ / MMBTU | 61.40
Mont Belvieu | January 2016 - December 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 1,000
Weighted Average Price | $ / MMBTU | 20.16
NYMEX Henry Hub | Call Option | Short | January 2016 - March 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 75,000
Weighted Average Price | $ / MMBTU | 3.25
NYMEX Henry Hub | Call Option | Short | January 2017 - March 2017 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 20,000
Weighted Average Price | $ / MMBTU | 2.91
NYMEX Henry Hub | Call Option | Short | April 2016 - December 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 95,000
Weighted Average Price | $ / MMBTU | 3.18
Swap | January 2016 - March 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 70,000
Weighted Average Price | $ / MMBTU | 0.11
Swap | April 2016 - December 2016 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 40,000
Weighted Average Price | $ / MMBTU | 0.02
Swap | November 2016 - March 2017 |
Derivative [Line Items] |
Daily Volume (MMBtu/day) | MMBTU / d | 50,000
Weighted Average Price | $ / MMBTU | 0.59

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