Other expense (income), net (Narrative) (Details)	12 Months Ended
	Dec. 29, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reserve for notes receivable disclosure	For the year ended December 29, 2018, represents a bad debt reserve for notes receivable associated with a previously sold business. The face amount of the notes was $1.4 million, which represented the Company’s cash investment in the notes. The notes had accelerated payment terms that entitled the Company to a multiple-times payout of the face amount of the notes. The accelerated payment terms were originally fair-valued at $3.4 million. The Company has received cash payments on the notes of $2.2 million through December 29, 2018 and has estimated that it will receive $0.3 million of the remaining balance related to the accelerated payment terms.
Loss contingency settlement agreement terms	In 2016, the Company recorded a charge of $9.0 million related to the settlement of a product recall dispute with a customer involving certain flexible resealable pouch products manufactured by the Company in 2013. The settlement amount included up to $4.0 million in rebates payable to the customer over a four-year period. In connection with the exit from the flexible resealable pouch product lines and operations, the Company agreed to an upfront cash settlement of the remaining rebate obligation, resulting in a recovery of $1.0 million recognized in 2017.