| Deferred Income (Tables) | 9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||
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| Sep. 29, 2012 | |||||||||||||||||||||||||||||||||||||||||||
| Deferred Income (Tables) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Deferred Income By Arrangement Disclosure [Table Text Block] | Deferred income at the end of each period was as follows: 
 
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- Definition Deferred Income By Arrangement Disclosure [Table Text Block] No definition available. 
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- Details 
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