Restructuring Property, plant and equipment (Details) - Property, Plant and Equipment, Type [Domain] $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 28, 2015 USD ($)	Jun. 29, 2014 USD ($)	Jun. 28, 2015 USD ($)	Jun. 29, 2014 USD ($)	Dec. 27, 2015 USD ($)	Dec. 28, 2014 USD ($)
Property, Plant and Equipment [Line Items]
Restructuring Charges	$ 1,565	$ 0	$ 3,438	$ 0
Property, plant and equipment, net	247,649		247,649			$ 255,035
Payments for Restructuring			$ (2,231)
Rogers, Arkansas facility closure [Member]
Property, Plant and Equipment [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated			500
Rogers, Arkansas facility closure [Member] | Rogers, Arkansas facility [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	500		$ 500
Cost of Sales [Member] | Rogers, Arkansas facility closure [Member]
Property, Plant and Equipment [Line Items]
Restructuring and Related Cost, Expected Cost	14,047		14,047
Selling, General and Administrative Expenses [Member]
Property, Plant and Equipment [Line Items]
Other Depreciation and Amortization			200
Restructuring Costs, All Costs [Member] | Cost of Sales [Member] | Rogers, Arkansas facility closure [Member]
Property, Plant and Equipment [Line Items]
Restructuring and Related Cost, Expected Cost	14,000		14,000
Scenario, Forecast [Member]
Property, Plant and Equipment [Line Items]
Payments for Restructuring					$ 5,900
Scenario, Forecast [Member] | Rogers, Arkansas facility closure [Member]
Property, Plant and Equipment [Line Items]
Restructuring and Related Cost, Expected Cost	$ 1,100		$ 1,100