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Intangible Assets (Schedule Of Goodwill) (Details) (USD $)
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12 Months Ended | ||
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Dec. 28, 2013
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Dec. 29, 2012
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Dec. 31, 2011
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| Intangible Assets [Abstract] | |||
| Gross goodwill, Beginning | $ 17,890,000 | $ 17,740,000 | |
| Accumulated impairment losses, Beginning | 0 | 0 | |
| Goodwill, Beginning | 17,890,000 | 17,740,000 | |
| Goodwill acquired during the year | 0 | 0 | |
| Impairment loss | 0 | 0 | 0 |
| Currency translation adjustments | 353,000 | 150,000 | |
| Gross goodwill, Ending | 18,243,000 | 17,890,000 | 17,740,000 |
| Accumulated impairment losses, Ending | 0 | 0 | 0 |
| Goodwill, Ending | $ 18,243,000 | $ 17,890,000 | $ 17,740,000 |
| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount before 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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