Costs Associated with Exit and Restructuring Activities - June 2013 Plan (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 28, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 28, 2015 USD ($)	Dec. 31, 2015 employee	Dec. 31, 2014 USD ($) employee
June 2013 Plan
Restructuring charges
Elimination of workforce | employee					350
Planned Costs	$ 22,600		$ 22,600
Actual costs incurred	27,596		27,596
Total restructuring, impairment and restructuring related charges
Restructuring and impairment charges	0	$ 602	0	$ 1,054
June 2013 Plan | Cost of Goods
Restructuring charges
Planned Costs	1,800		1,800
Actual costs incurred	3,637		3,637
Total restructuring, impairment and restructuring related charges
Restructuring related charges	0	0	0	75
June 2013 Plan | Operating Earnings
Restructuring charges
Planned Costs	20,800		20,800
Actual costs incurred	23,959		23,959
Total restructuring, impairment and restructuring related charges
Restructuring and impairment charges	0	$ 602	0	$ 979
June 2013 Plan | Inventory write-down | Cost of Goods
Restructuring charges
Planned Costs	800		800
Actual costs incurred	1,143		1,143
June 2013 Plan | Equipment relocation | Cost of Goods
Restructuring charges
Planned Costs	900		900
Actual costs incurred	1,792		1,792
June 2013 Plan | Other charges | Cost of Goods
Restructuring charges
Planned Costs	100		100
Actual costs incurred	702		702
June 2013 Plan | Workforce reduction | Operating Earnings
Restructuring charges
Planned Costs	10,150		10,150
Actual costs incurred	9,615		9,615
June 2013 Plan | Asset impairment charge | Operating Earnings
Restructuring charges
Planned Costs	3,000		3,000
Actual costs incurred	4,139		4,139
June 2013 Plan | Other charges, including pension termination costs | Operating Earnings
Restructuring charges
Planned Costs	7,650		7,650
Actual costs incurred	$ 10,205		$ 10,205
Amended June 2013 Plan
Restructuring charges
Planned Costs						$ 4,000
Amended June 2013 Plan | Workforce reduction
Restructuring charges
Elimination of workforce | employee						130
Foreign Pension Plans | Amended June 2013 Plan | UNITED KINGDOM
Restructuring charges
Planned Costs						$ 2,000
Foreign Pension Plans | Amended June 2013 Plan | Asset impairment charge
Restructuring charges
Planned Costs						$ 2,000