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Property, Plant and Equipment
6 Months Ended
Jun. 30, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Property, Plant and Equipment
(Dollars in thousands)
 
 
 
 
June 30, 2013
 
December 30, 2012
Land and buildings
$
70,630

 
$
70,235

Machinery and equipment
415,099

 
408,620

Leasehold improvements and others
8,488

 
8,374

Construction in progress
13,540

 
7,565

 
507,757

 
494,794

Accumulated depreciation
(357,953
)
 
(347,250
)
Property, plant and equipment, net
$
149,804

 
$
147,544



Depreciation expense was $7.1 million and $6.3 million for the thirteen weeks ended June 30, 2013 and June 24, 2012, respectively. Depreciation expense was $14.0 million and $12.9 million for the twenty-six weeks ended June 30, 2013 and June 24, 2012, respectively.