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Accumulated Other Comprehensive Income (Loss)
 9 Months Ended
Sep. 29, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
    
Accumulated other comprehensive loss, net of tax, is comprised of the following items:
 
(In thousands)
September 29,
2012
 
December 31,
2011
Unrealized gain (loss) on available-for-sale investments
$
5

 
$
(30
)
Change in minimum postretirement medical obligation
(61
)
 
(69
)
Accumulated other comprehensive loss at end of period
$
(56
)
 
$
(99
)