Value Creation Plan (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016	Oct. 07, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring And Related Cost, Expected Cost	$ 4,000				$ 4,000
Temporary Equity Aggregate Amount Of Redemption Requirement								$ 85,000
Gain (Loss) On Sale of Assets	0			$ 0	0	$ 0
Asset Impairment Charges	0			$ 0	3,723	$ 1,735
Restructuring Charges	7,688	$ 17,283			24,971		$ 18,326
Pouch [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring And Related Cost, Expected Cost	9,000				9,000
Pouch [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring And Related Cost, Expected Cost	8,000				8,000
San Bernardino Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges			$ 10,300		3,200
Contract Terminations					3,200
Notes Receivable Gross	200				200
Restructuring Charges					372
Heuvelton Facility Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges			$ 1,200
Cost Of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	262				634
Selling General And Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7,001				18,439
Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 425				$ 5,898