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Supplemental Financial Information (Schedule Of Supplemental Disclosures Of Cash Flow Information And Non-Cash Investing And Financing Activities) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Supplemental Financial Information [Abstract]
Purchase of equipment not paid for at the end of the period		$ 500
Debt financed acquisition of assets	240	180
Change in unrealized (gain) loss from investments in marketable securities		(1)
Contractual marketing funds due to collaboration partners		$ 800

The value of the noncash (or part noncash) consideration received in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period.

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