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Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity (Components) (Details)
$ in Thousands
 3 Months Ended
Apr. 02, 2016
USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 $ (5,186)
Balance at April 2, 2016 (5,502)
Accumulated Other Comprehensive Income (Loss) [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 (5,186)
Other comprehensive income (loss) before reclassifications (375)
Amounts reclassified from accumulated other comprehensive (income)loss 59
Balance at April 2, 2016 (5,502)
Foreign Currency Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 322
Other comprehensive income (loss) before reclassifications $ 157
Amounts reclassified from accumulated other comprehensive (income)loss
Balance at April 2, 2016 $ 479
Unrealized Gains (Losses) on Marketable Securities [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 (2)
Other comprehensive income (loss) before reclassifications $ 50
Amounts reclassified from accumulated other comprehensive (income)loss
Balance at April 2, 2016 $ 48
Pension Postretirement Liability [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 $ (5,506)
Other comprehensive income (loss) before reclassifications
Amounts reclassified from accumulated other comprehensive (income)loss
Balance at April 2, 2016 $ (5,506)
Derivative Financial Instruments [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 2, 2016 0
Other comprehensive income (loss) before reclassifications (582)
Amounts reclassified from accumulated other comprehensive (income)loss 59
Balance at April 2, 2016 $ (523)