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Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2013

Asset Retirement Obligation [Abstract]

Activity Associated With Asset Retirement Obligations

The following table illustrates the activity associated with our asset retirement obligations for the three months ended March 31, 2013 and March 31, 2012.

(in thousands)		2013				2012
Asset retirement obligations, January 1		$	2,800			$	3,297
Accretion expense		30				43
Liabilities settled		(297		)		(128		)
Changes in expected cash flows and timing		185				98
Asset retirement obligations, March 31		$	2,718			$	3,310

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- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859

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