v2.4.0.6
Derivative Financial Instruments (Schedule Of Open Commodity Derivative Positions) (Details)
Jun. 30, 2012
Q3-Q4 2012 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Swaps [Member]
 
Derivative [Line Items]  
Volume per day 54,000
Weighted Average Price 105.90
Q3-Q4 2012 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Collars [Member]
 
Derivative [Line Items]  
Volume per day 74,000
Weighted Average Floor Price 89.71
Weighted Average Ceiling Price 123.09
Q3-Q4 2012 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Call Options Sold [Member]
 
Derivative [Line Items]  
Volume per day 19,500
Weighted Average Price 95.00
Q3-Q4 2012 [Member] | MMBtu [Member] | Open Natural Gas Derivative Positions [Member] | Price Swaps [Member]
 
Derivative [Line Items]  
Volume per day 573,370
Weighted Average Price 4.04
Q3-Q4 2012 [Member] | MMBtu [Member] | Open Natural Gas Derivative Positions [Member] | Price Collars [Member]
 
Derivative [Line Items]  
Volume per day 991,685
Weighted Average Floor Price 3.71
Weighted Average Ceiling Price 4.40
Q3-Q4 2012 [Member] | MMBtu [Member] | Open Natural Gas Derivative Positions [Member] | Call Options Sold [Member]
 
Derivative [Line Items]  
Volume per day 487,500
Weighted Average Price 6.00
Q1-Q4 2013 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Swaps [Member]
 
Derivative [Line Items]  
Volume per day 31,000
Weighted Average Price 104.13
Q1-Q4 2013 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Collars [Member]
 
Derivative [Line Items]  
Volume per day 45,000
Weighted Average Floor Price 91.30
Weighted Average Ceiling Price 116.23
Q1-Q4 2013 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Call Options Sold [Member]
 
Derivative [Line Items]  
Volume per day 6,000
Weighted Average Price 120.00
Q1-Q4 2013 [Member] | MMBtu [Member] | Open Natural Gas Derivative Positions [Member] | Price Swaps [Member]
 
Derivative [Line Items]  
Volume per day 150,000
Weighted Average Price 4.50
Q1-Q4 2014 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Swaps [Member]
 
Derivative [Line Items]  
Volume per day 4,000
Weighted Average Price 100.49
Q1-Q4 2014 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Price Collars [Member]
 
Derivative [Line Items]  
Volume per day 2,000
Weighted Average Floor Price 90.00
Weighted Average Ceiling Price 111.13
Q1-Q4 2014 [Member] | Bbl [Member] | Open Oil Derivative Positions [Member] | Call Options Sold [Member]
 
Derivative [Line Items]  
Volume per day 6,000
Weighted Average Price 120.00
Q1-Q4 2014 [Member] | MMBtu [Member] | Open Natural Gas Derivative Positions [Member] | Call Options Sold [Member]
 
Derivative [Line Items]  
Volume per day 150,000
Weighted Average Price 5.00