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Derivatives Derivatives (Schedule of Subsequent Derivatives Outstanding (Details)
1 Months Ended 3 Months Ended
Apr. 26, 2016
$ / Unit
MMBTU
bbl
Mar. 31, 2016
$ / Unit
MMBTU
Jul'16 - Sep'16 [Member] | Crude Oil [Member] | Collar [Member] | Subsequent Event [Member] | WTI - NYMEX [Member]    
Derivative [Line Items]    
Hedged volume (Bbl/day) | bbl 1,000  
Floor Price 40.00  
Cap Price 46.75  
Jan'17 - Oct'17 [Member] | Natural Gas [Member] | Collar [Member] | Subsequent Event [Member] | IF - NYMEX (HH) [Member]    
Derivative [Line Items]    
Hedged volume (MMBtu/day) | MMBTU 10,000  
Floor Price 2.75  
Cap Price 2.95  
Jan'17 - Dec'17 [Member] | Natural Gas [Member] | Swap [Member] | IF - NYMEX (HH) [Member]    
Derivative [Line Items]    
Hedged volume (MMBtu/day) | MMBTU   10,000
Weighted average price   2.795
Jan'17 - Dec'17 [Member] | Natural Gas [Member] | Swap [Member] | Subsequent Event [Member] | IF - NYMEX (HH) [Member]    
Derivative [Line Items]    
Hedged volume (MMBtu/day) | MMBTU 20,000  
Weighted average price 2.960