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Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity (Components) (Details)
$ in Thousands
 9 Months Ended
Oct. 03, 2015
USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 $ (5,375)
Balance at October 3, 2015 (6,297)
Accumulated Other Comprehensive Income (Loss) [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 (5,375)
Other comprehensive income (loss) before reclassifications (2,224)
Amounts reclassified from accumulated other comprehensive income 1,302
Balance at October 3, 2015 (6,297)
Foreign Currency Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 2,223
Other comprehensive income (loss) before reclassifications $ (1,242)
Amounts reclassified from accumulated other comprehensive income
Balance at October 3, 2015 $ 981
Unrealized Gains (Losses) on Marketable Securities [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 37
Other comprehensive income (loss) before reclassifications $ 22
Amounts reclassified from accumulated other comprehensive income
Balance at October 3, 2015 $ 59
Pension Postretirement Liability [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 (6,763)
Other comprehensive income (loss) before reclassifications $ 0
Amounts reclassified from accumulated other comprehensive income
Balance at October 3, 2015 $ (6,763)
Derivative Financial Instruments [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Balance at January 3, 2015 (872)
Other comprehensive income (loss) before reclassifications (1,004)
Amounts reclassified from accumulated other comprehensive income 1,302
Balance at October 3, 2015 $ (574)