XML 38 R34.htm IDEA: XBRL DOCUMENT v2.4.0.8
Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Property, Plant and Equipment [Abstract]    
Proved oil and gas properties $ 2,608,460 [1] $ 2,271,711 [1]
Less: Accumulated depreciation, depletion, amortization and impairment (498,007) (383,564)
Proved oil and gas properties, net 2,110,453 [2] 1,888,147 [2]
Unproved oil and gas properties 67,442 76,417
Total oil and gas properties, net 2,177,895 1,964,564
Other property and equipment 144,518 49,732
Less: Accumulated depreciation (16,560) (7,696)
Other property and equipment, net 127,958 [2] 42,036 [2]
Total property, plant and equipment, net $ 2,305,853 $ 2,006,600
[1] Included in the Company’s proved oil and gas properties are estimates of future asset retirement costs of $26.3 million and $20.7 million at June 30, 2013 and December 31, 2012, respectively.
[2] The Company reclassed substantially all of its salt water disposal and other midstream assets from proved oil and gas properties to other property and equipment, effective January 1, 2013.