Business Acquisitions (Citrusource, LLC) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Mar. 02, 2015
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net [Abstract]
Goodwill	$ 109,533	$ 223,611	$ 241,690
Citrusource, LLC [Member]
Business Acquisition [Line Items]
Cash	$ 13,300
Business Combination Contingent Consideration Arrangements Description	The fair value of the contingent consideration obligation was determined to be $18.0 million as at the acquisition date. In 2017 and 2016, the Company paid $4.1 million and $3.9 million, respectively, to the former unitholders of Citrusource in partial settlement of the contingent consideration obligation.
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net [Abstract]
Accounts receivable				$ 2,351
Inventories				1,745
Property, plant and equipment				164
Intangible Assets				14,000
Accounts payable and accrued liabilities				1,666
Total consideration/Net identifiable assets acquired (liabilities assumed)				16,594
Goodwill				15,136
Net Assets Acquired Total				$ 31,730