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Restructuring (Tables)
 3 Months Ended
Apr. 01, 2017
Restructuring Cost and Reserve [Line Items]  
Restructuring and Related Costs [Table Text Block]
The activity for the restructuring programs is presented below:

 
Three Months Ended
 
April 1, 2017
 
(in thousands)
Balance at beginning of period
$
188

Charges
—

Utilization
(27
)
Balance at end of period
$
161