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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Discontinued Operations (Details) (USD $) In Thousands	3 Months Ended			9 Months Ended			3 Months Ended		9 Months Ended
Discontinued Operations (Details) (USD $) In Thousands	Sep. 24, 2011	Mar. 26, 2011	Sep. 25, 2010	Sep. 24, 2011	Sep. 25, 2010	Dec. 25, 2010	Sep. 24, 2011 Phase I clinical business	Sep. 25, 2010 Phase I clinical business	Sep. 24, 2011 Phase I clinical business	Sep. 25, 2010 Phase I clinical business	Jun. 25, 2011 Phase I clinical business	Dec. 25, 2010 Phase I clinical business
Operating results from discontinued operations
Facility lease payments									$ 15,060
Net sales								5,196	2,122	13,766
Income (loss) from operations of discontinued businesses, before income taxes							24	(1,354)	(8,129)	(3,727)
Provision (benefit) from income taxes		(11,111)					42	(368)	(2,434)	(1,264)
Loss from operations of discontinued businesses, net of taxes	(18)		(986)	(5,695)	(2,463)		(18)	(986)	(5,695)	(2,463)
Assets and liabilities of discontinued operations
Current assets						3,862						3,862
Non-current assets	1,121			1,121		822	1,121		1,121			822
Total assets							1,121		1,121			4,684
Current liabilities	1,129			1,129		3,284	1,129		1,129			3,284
Non-current liabilities	2,590			2,590			2,590		2,590		2,994
Total liabilities							$ 3,719		$ 3,719			$ 3,284