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Components of Accumulated Other Comprehensive Income (Loss) (Tables)
 6 Months Ended
Jun. 28, 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 six months ended June 28, 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
—

 
385

 
8

 
393

Balance at June 28, 2014
$
(28
)
 
$
1,016

 
$
17

 
$
1,005