Derivative Financial Instruments Schedule of Offsetting of Derivate Liabilities (Details) - USD ($) $ in Thousands	Jul. 03, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 543	$ 451
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	543	451
Financial Instruments	(384)	(451)
Cash Collateral Pledged	0	0
Net Amount	159	0
Barclays [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	197	56
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	197	56
Financial Instruments	(38)	(56)
Cash Collateral Pledged	0	0
Net Amount	159	0
Wells Fargo Bank [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	346	395
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	346	395
Financial Instruments	(346)	(395)
Cash Collateral Pledged	0	0
Net Amount	$ 0	$ 0