Derivatives (Commodity Derivatives) (Details) | 3 Months Ended |
Mar. 31, 2014 | Mar. 31, 2013 |
MBbls | MBbls |
MMMBTU | MMMBTU |
Derivative [Line Items] | ' | ' |
Volumes of natural gas production on settled derivatives (in MMMbtu) | 43,651 | 42,778 |
Average contract price per MMBtu on settled derivatives | 5.14 | 5.29 |
Volumes of oil production on settled derivatives (in MBbls) | 6,161 | 3,693 |
Average contract price per barrel on settled derivatives | 92.39 | 95.57 |
2014 | Natural Gas Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 73,384 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 5.25 | ' |
2014 | Natural Gas Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 59,994 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 5 | ' |
2014 | Oil Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 12,681 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 92.44 | ' |
2014 | Oil Derivative Instruments | Crude Oil Sales - Collars [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 550 | ' |
Derivative, Floor Price | 90 | ' |
Derivative, Cap Price | 102.87 | ' |
2014 | Oil Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 2,983 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 91.3 | ' |
2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 2,338 | ' |
2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 275 | ' |
2014 | Natural Gas Basis Differential Positions | Panhandle Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 59,813 | ' |
Hedged Differential (in usd per energy unit) | -0.33 | ' |
2014 | Natural Gas Basis Differential Positions | NWPL - Rockies basis swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 30,533 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2014 | Natural Gas Basis Differential Positions | MichCon Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,150 | ' |
Hedged Differential (in usd per energy unit) | 0.08 | ' |
2014 | Natural Gas Basis Differential Positions | Houston Ship Channel Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 3,960 | ' |
Hedged Differential (in usd per energy unit) | -0.1 | ' |
2014 | Natural Gas Basis Differential Positions | Permian Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 3,685 | ' |
Hedged Differential (in usd per energy unit) | -0.21 | ' |
2014 | Oil Basis Differential Commodity Contract [Member] | ICE Brent - NYMEX WTI basis swaps [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 2,750 | ' |
Hedged Differential (in usd per energy unit) | 11.6 | ' |
2014 | Oil Timing Differential Positions | Trade month roll swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 6,841 | ' |
Hedged Differential (in usd per energy unit) | 0.24 | ' |
2014 | Natural Gas Liquid Commodity Contract | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,964 | ' |
2015 | Natural Gas Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 118,041 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 5.19 | ' |
2015 | Natural Gas Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 71,854 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 5 | ' |
2015 | Oil Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 11,599 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 96.23 | ' |
2015 | Oil Derivative Instruments | Crude Oil Sales - Collars [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
2015 | Oil Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 3,426 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 90 | ' |
2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 1,095 | ' |
2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2015 | Natural Gas Basis Differential Positions | Panhandle Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 87,162 | ' |
Hedged Differential (in usd per energy unit) | -0.33 | ' |
2015 | Natural Gas Basis Differential Positions | NWPL - Rockies basis swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 43,292 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2015 | Natural Gas Basis Differential Positions | MichCon Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 9,344 | ' |
Hedged Differential (in usd per energy unit) | 0.06 | ' |
2015 | Natural Gas Basis Differential Positions | Houston Ship Channel Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 4,891 | ' |
Hedged Differential (in usd per energy unit) | -0.1 | ' |
2015 | Natural Gas Basis Differential Positions | Permian Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 5,074 | ' |
Hedged Differential (in usd per energy unit) | -0.21 | ' |
2015 | Oil Basis Differential Commodity Contract [Member] | ICE Brent - NYMEX WTI basis swaps [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 2,920 | ' |
Hedged Differential (in usd per energy unit) | 11.6 | ' |
2015 | Oil Timing Differential Positions | Trade month roll swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,251 | ' |
Hedged Differential (in usd per energy unit) | 0.24 | ' |
2015 | Natural Gas Liquid Commodity Contract | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 10,570 | ' |
2016 | Natural Gas Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 121,841 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 4.2 | ' |
2016 | Natural Gas Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 76,269 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 5 | ' |
2016 | Oil Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 11,465 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 90.56 | ' |
2016 | Oil Derivative Instruments | Crude Oil Sales - Collars [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
2016 | Oil Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 3,271 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 90 | ' |
2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2016 | Natural Gas Basis Differential Positions | Panhandle Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 59,954 | ' |
Hedged Differential (in usd per energy unit) | -0.32 | ' |
2016 | Natural Gas Basis Differential Positions | NWPL - Rockies basis swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 46,294 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2016 | Natural Gas Basis Differential Positions | MichCon Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,768 | ' |
Hedged Differential (in usd per energy unit) | 0.05 | ' |
2016 | Natural Gas Basis Differential Positions | Houston Ship Channel Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 4,575 | ' |
Hedged Differential (in usd per energy unit) | -0.1 | ' |
2016 | Natural Gas Basis Differential Positions | Permian Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 4,219 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2016 | Oil Basis Differential Commodity Contract [Member] | ICE Brent - NYMEX WTI basis swaps [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Hedged Differential (in usd per energy unit) | 0 | ' |
2016 | Oil Timing Differential Positions | Trade month roll swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,446 | ' |
Hedged Differential (in usd per energy unit) | 0.25 | ' |
2016 | Natural Gas Liquid Commodity Contract | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 10,599 | ' |
2017 | Natural Gas Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 120,122 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 4.26 | ' |
2017 | Natural Gas Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 66,886 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 4.88 | ' |
2017 | Oil Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 4,755 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 89.02 | ' |
2017 | Oil Derivative Instruments | Crude Oil Sales - Collars [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
2017 | Oil Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 384 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 90 | ' |
2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2017 | Oil Derivative Instruments | Extendible Fixed Price Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Weighted Average Fixed Price (in usd per energy unit) | 100 | ' |
Amount of outstanding extendible fixed price oil swaps of daily production (in MBbls) | 5,384 | ' |
2017 | Natural Gas Basis Differential Positions | Panhandle Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 59,138 | ' |
Hedged Differential (in usd per energy unit) | -0.33 | ' |
2017 | Natural Gas Basis Differential Positions | NWPL - Rockies basis swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 38,880 | ' |
Hedged Differential (in usd per energy unit) | -0.19 | ' |
2017 | Natural Gas Basis Differential Positions | MichCon Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 7,437 | ' |
Hedged Differential (in usd per energy unit) | 0.05 | ' |
2017 | Natural Gas Basis Differential Positions | Houston Ship Channel Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 3,604 | ' |
Hedged Differential (in usd per energy unit) | -0.08 | ' |
2017 | Natural Gas Basis Differential Positions | Permian Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 4,819 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2017 | Oil Basis Differential Commodity Contract [Member] | ICE Brent - NYMEX WTI basis swaps [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Hedged Differential (in usd per energy unit) | 0 | ' |
2017 | Oil Timing Differential Positions | Trade month roll swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 6,486 | ' |
Hedged Differential (in usd per energy unit) | 0.25 | ' |
2018 | Natural Gas Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 36,500 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 5 | ' |
2018 | Natural Gas Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 0 | ' |
2018 | Oil Derivative Instruments | Fixed price swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Weighted Average Fixed Price (in usd per energy unit) | 0 | ' |
2018 | Oil Derivative Instruments | Crude Oil Sales - Collars [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
2018 | Oil Derivative Instruments | Puts | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Weighted Average Short Put Price (in usd per energy unit) | 0 | ' |
2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
2018 | Oil Derivative Instruments | Extendible Fixed Price Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Amount of outstanding extendible fixed price oil swaps of daily production (in MBbls) | 5,384 | ' |
2018 | Natural Gas Basis Differential Positions | Panhandle Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 16,425 | ' |
Hedged Differential (in usd per energy unit) | -0.33 | ' |
2018 | Natural Gas Basis Differential Positions | NWPL - Rockies basis swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 10,804 | ' |
Hedged Differential (in usd per energy unit) | -0.19 | ' |
2018 | Natural Gas Basis Differential Positions | MichCon Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 2,044 | ' |
Hedged Differential (in usd per energy unit) | 0.05 | ' |
2018 | Natural Gas Basis Differential Positions | Houston Ship Channel Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 986 | ' |
Hedged Differential (in usd per energy unit) | -0.08 | ' |
2018 | Natural Gas Basis Differential Positions | Permian Basis Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 1,314 | ' |
Hedged Differential (in usd per energy unit) | -0.2 | ' |
2018 | Oil Basis Differential Commodity Contract [Member] | ICE Brent - NYMEX WTI basis swaps [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Hedged Differential (in usd per energy unit) | 0 | ' |
2018 | Oil Timing Differential Positions | Trade month roll swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Annual Hedged Volume (in energy unit) | 0 | ' |
Hedged Differential (in usd per energy unit) | 0 | ' |
2019 | Oil Derivative Instruments | Extendible Fixed Price Swaps | ' | ' |
Derivative [Line Items] | ' | ' |
Weighted Average Fixed Price (in usd per energy unit) | 90 | ' |
Amount of outstanding extendible fixed price oil swaps of daily production (in MBbls) | 5,384 | ' |
Short [Member] | 2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 72.11 | ' |
Derivative, Cap Price | 109.79 | ' |
Short [Member] | 2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 80 | ' |
Derivative, Cap Price | 114.05 | ' |
Short [Member] | 2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 70 | ' |
Derivative, Cap Price | 101.62 | ' |
Short [Member] | 2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Short [Member] | 2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Derivative, Cap Price | 0 | ' |
Long [Member] | 2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 93.76 | ' |
Long [Member] | 2014 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 100 | ' |
Long [Member] | 2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 90 | ' |
Long [Member] | 2015 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2016 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2017 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 1 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |
Long [Member] | 2018 | Oil Derivative Instruments | Crude Oil Sales - Three-way collars - Derivative 2 [Member] | ' | ' |
Derivative [Line Items] | ' | ' |
Derivative, Floor Price | 0 | ' |