XML 48 R53.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended
Aug. 26, 2009
Case filed by Mineral interest owners in East Texas
item
Dec. 31, 2012
Case filed by the holders of oil and gas leases in South Louisiana
item
Sep. 30, 2012
Litigation Case Filed by Mineral Interest Owner Harris County
Dec. 31, 2012
Case related to unrecognized working interest
Legal Proceedings        
Number of causes of action filed against entity 2      
Most-recently alleged damages   $ 13.4    
Number of wells in connection with which suit has been filed   2    
Maximum amount asserted in the suit filed       4.9
Mineral interest in the producing intervals of wells operated by the entity     0.0625  
Additional mineral interest in the producing intervals of wells allegedly owned by the plaintiff     0.0625  
Minimum damages alleged by the plaintiff     $ 6.0  
Undisputed mineral interest     0.0625