Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Deferred tax assets:
Loss contingency reserves	$ 8,546	$ 11,998
Employee benefits	8,471	9,586
Pension liability	12,224	18,200
Intangible assets amortization, including taxable goodwill	1,475	2,317
Net operating losses	89,660	119,602
Tax credits	7,057	3,473
Inventory	6,295	8,523
Accrued liabilities and other	13,764	13,340
Total gross deferred tax assets	147,492	187,039
Less valuation allowance	(24,530)	(20,150)
Net deferred tax assets	122,962	166,889
Deferred tax liabilities:
Intangible assets amortization, including taxable goodwill	(170,294)	(189,233)
Property, plant and equipment depreciation	(166,217)	(207,729)
Investment in DGD Joint Venture	(29,516)	(47,607)
Tax on unremitted foreign earnings	(8,045)	(49,196)
Other	(1,555)	(4,268)
Total gross deferred tax liabilities	(375,627)	(498,033)
Net deferred tax liability	(252,665)	(331,144)
Non-current deferred tax asset	14,043	14,990
Non-current deferred tax liability	(266,708)	(346,134)
Class of Stock [Line Items]
Total gross deferred tax liabilities	$ (375,627)	$ (498,033)