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Components of Accumulated Other Comprehensive Income (Loss) (Tables)
 9 Months Ended
Sep. 27, 2014
Equity [Abstract]  
Changes in components of accumulated other comprehensive income (loss)
The following table shows a summary of changes in components of accumulated other comprehensive income (loss) for the nine months ended September 27, 2014 (in thousands):

 
Defined Benefit Pension Plans
 
Foreign Currency Translations
 
Unrealized Gain on Investment
 
Total
Balance at December 28, 2013
$
(28
)
 
$
631

 
$
9

 
$
612

Other comprehensive income (loss)
—

 
(1,252
)
 
(7
)
 
(1,259
)
Balance at September 27, 2014
$
(28
)
 
$
(621
)
 
$
2

 
$
(647
)