Asset and Liabilities Including Reserves (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jul. 31, 2012	Jan. 01, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets	$ 0		$ 43,843
Property and equipment	0	11,800	12,194
Other assets	0		4,646
Current liabilities	0		6,254
Other liabilities	$ 0		$ 2,015

For the disposal group, including a component of the entity (discontinued operation), carrying value (net of accumulated depreciation and any write-downs) of tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Carrying value as of the balance sheet date of current obligations (due less than one year or one operating cycle, if longer) arising from the sale, disposal or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation).

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