Asset Retirement Obligation (Tables)

6 Months Ended

Jun. 30, 2013

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation Summary

	Asset Retirement
Asset Category	Obligation Liability		Estimated Life
Oil and gas producing properties	$                         2	(1)	27.5 years
__________________________ (1) This is a Level 3 fair value measurement.

Change in Asset Retirement Obligation

	2013
Asset retirement obligation at beginning of period	$	4
Additions during the period		1
Disposals during the period		—
Revisions of estimates		(3	)
Accretion expense		—
Asset retirement obligation at end of period	$	2