Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 25, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, Plant and Equipment

(Dollars in thousands)
	September 25, 2016			December 27, 2015
Land and buildings	$	68,317		$	73,803
Machinery and equipment	483,724			486,612
Leasehold improvements and others	4,618			4,204
Construction in progress	30,778			20,455
	587,437			585,074
Accumulated depreciation	(359,851		)	(350,428		)
Property, plant and equipment, net	$	227,586		$	234,646