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Goodwill (Tables)
 9 Months Ended
Sep. 25, 2015
Goodwill [Abstract]  
Schedule of Goodwill [Table Text Block]
Goodwill activity was as follows:

 
 
Nine Months Ended
(In thousands)
 
September 25, 2015
Beginning Balance
 
$
74,341

Addition due to 2015 acquisition
 
6,990

Ending Balance
 
$
81,331