Derivatives and Hedging Activities - Derivative Contracts (Details 2) - Foreign Exchange Forward Contract [Member] - USD ($)	Jun. 28, 2015	Dec. 28, 2014
Other current assets [Member]
Designated cash flow hedges, assets
Foreign exchange forward contracts designated	$ 8,854,000	$ 0
Non-designated cash flow hedges, assets
Foreign exchange forward contracts not designated	795,000	4,800,000
Total derivatives, assets	9,649,000	4,800,000
Other current accrued liabilities [Member]
Designated cash flow hedges, liabilities
Foreign exchange forward contracts designated	0	1,472,000
Non-designated cash flow hedges, liabilities
Foreign exchange forward contracts not designated	1,284,000	6,752,000
Total derivatives, liabilities	$ 1,284,000	$ 8,224,000