XML 47 R96.htm IDEA: XBRL DOCUMENT

Supplemental Oil and Natural Gas Disclosures (Unaudited) - Capitalized Cost Related to Oil and Natural Gas Producing Activities (Detail) (Consolidated Entities [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Consolidated Entities [Member]
Capitalized Costs Relating To Oil And Gas Producing Activities Line Items
Unproved oil and natural gas properties	$ 81,672	$ 714
Proved oil and natural gas properties	81,412	4,002
Total costs	163,084	4,716
Less accumulated depreciation, depletion and amortization	(4,657)	(155)
Net capitalized costs	$ 158,427	$ 4,561

Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table.

+ References+ Details

- Definition

Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table.

+ References+ Details