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Asset Retirement Obligations | 12 Months Ended
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Aug. 25, 2012
Asset Retirement Obligations [Abstract] |
Asset Retirement Obligations | 10. Asset Retirement Obligations Asset retirement obligations generally applies to legal obligations associated with the retirement of long-lived assets that result from the acquisition, construction, development and/or the normal operation of a long-lived asset. Accordingly, the Company recognizes asset retirement obligations in the period in which they are incurred if a reasonable estimate of fair value can be made. The associated asset retirement costs are capitalized as part of the carrying amount of the long-lived asset. The Company continues to depreciate, on a straight-line basis, the amount added to property, plant and equipment and recognizes accretion expense in connection with the discounted liability over the various remaining lives which range from approximately one to thirty-two years. The Company recognized as a liability the present value of the estimated future costs to decommission its nuclear laundry facilities. The estimated liability is based on historical experience in decommissioning nuclear laundry facilities, estimated useful lives of the underlying assets, external vendor estimates as to the cost to decommission these assets in the future, and federal and state regulatory requirements. The estimated current costs have been adjusted for the estimated impact of inflation at 3% per year. The liability has been discounted using credit-adjusted risk-free rates that range from approximately 7.0% to 7.5% over one to thirty-two years. Revisions to the liability could occur due to changes in the Company's estimated useful lives of the underlying assets, estimated dates of decommissioning, changes in decommissioning costs, changes in federal or state regulatory guidance on the decommissioning of such facilities, or other changes in estimates. Changes due to revised estimates will be recognized by adjusting the carrying amount of the liability and the related long-lived asset if the assets are still in service, or charged to expense in the period if the assets are no longer in service. A reconciliation of the Company's asset retirement liabilities is as follows (in thousands):
|  | August 25, 2012 |  |  | August 27, 2011 |
Beginning balance |  | $ | 9,488 |  |  | $ | 8,899 |
Accretion expense |  |  | 632 |  |  |  | 589 |
Ending balance |  | $ | 10,120 |  |  | $ | 9,488 |
Asset retirement obligations are included in long-term accrued liabilities in the accompanying Consolidated Balance Sheets.

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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