Business Combinations (Schedule Of Business Acquisitions) (Details) (USD $)	Sep. 27, 2014	Dec. 28, 2013	Sep. 04, 2014 RAID Software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Other current assets			$ 337,000
Equipment			873,000
Goodwill	283,239,000	278,849,000	4,390,000
Intangible assets			44,900,000
Total assets			50,500,000
Total acquisition consideration (discounted)			50,500,000
Liabilities assumed			$ 0

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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