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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2011

7.	Asset Retirement Obligations

The following table reconciles our AROs for the periods presented, which are included in the Other liabilities caption on our Consolidated Balance Sheets:

	As of December 31,
	2011			2010
Balance at beginning of year	$	7,364		$	6,835
Liabilities incurred		214			126
Liabilities settled		(183	)		(41	)
Sale of properties		(1,611	)		-
Accretion expense		499			444
Balance at end of year	$	6,283		$	7,364

- Definition

The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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