Value Creation Plan (Tables) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 29, 2018		Dec. 30, 2017		Dec. 31, 2016
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		$ 2,374		$ 49,912		$ 18,326
Cost of goods sold		1,137,382		1,134,506		1,220,779
Selling, general and administrative expenses		108,248		127,507		98,681
Value Creation Plan [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		2,374		49,912		18,326
Cash receipts (payments), net		(3,933)		(38,614)		(3,078)
Restructuring Reserve Settled Without Cash		(1,255)		(11,031)		(11,788)
Restructuring Reserve		913		3,727		3,460
Restructuring And Related Cost, Cost Incurred To Date1		70,612
Cash receipts (payments), net, to date		(45,625)
Restructuring Reserve Settled Without Cash, To Date		(24,074)
Cost of goods sold	[1]	100		3,189		0
Selling, general and administrative expenses	[2]	613		22,894		4,041
Other Expenses		1,661	[3]	23,829	[4]	14,285	[5]
Facility Closing [Member] | Value Creation Plan [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		1,364		21,766		11,522
Cash receipts (payments), net		1,068		(10,746)		0
Restructuring Reserve Settled Without Cash		(1,255)		(11,720)		(11,522)
Restructuring Reserve		477		(700)		0
Restructuring And Related Cost, Cost Incurred To Date1		34,652
Cash receipts (payments), net, to date		(9,678)
Restructuring Reserve Settled Without Cash, To Date		(24,497)
Consulting and temporary labour costs | Value Creation Plan [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		410		16,528		4,041
Cash receipts (payments), net		(410)		(18,185)		(2,384)
Restructuring Reserve Settled Without Cash		0		0		0
Restructuring Reserve		0		0		1,657
Restructuring And Related Cost, Cost Incurred To Date1		20,979
Cash receipts (payments), net, to date		(20,979)
Restructuring Reserve Settled Without Cash, To Date		0
Employee Recruitment Retention And Termination Costs [Member] | Value Creation Plan [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring Charges		600		11,618		2,763
Cash receipts (payments), net		(4,591)		(9,683)		(694)
Restructuring Reserve Settled Without Cash		0		689		(266)
Restructuring Reserve		436		$ 4,427		$ 1,803
Restructuring And Related Cost, Cost Incurred To Date1		14,981
Cash receipts (payments), net, to date		(14,968)
Restructuring Reserve Settled Without Cash, To Date		$ 423

[1] (1) Inventory write-downs and facility closure costs recorded in cost of goods sold were allocated to the Consumer Products operating segment.

[2] Consulting/professional fees and temporary labor costs, and employee recruitment, relocation and retention costs recorded in selling, general and administrative expenses were allocated to Corporate Services.

[3] For the year ended December 29, 2018, asset impairment, lease obligation and employee termination costs recorded in other expense were allocated as follows: Raw Material Sourcing and Supply operating segment - $0.7 million; Consumer Products operating segment - $0.8 million; and Corporate Services - $0.2 million.

[4] For the year ended December 30, 2017, asset impairment and employee termination costs recorded in other expense were allocated as follows: Raw Material Sourcing and Supply operating segment - $2.1 million; Consumer Products operating seg ment - $20.6 million; and Corporate Services - $1.1 million.

[5] For the year ended December 31, 2016, asset impairment and employee termination costs recorded in other expense were allocated as follows: Raw Material Sourcing and Supply operating segment - $ 1.6 million; Consumer Products operating segment - $10.6 million; and Corporate Services - $2.1 million.