Derivative Financial Instruments Scheduel of Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands	Apr. 02, 2017	Dec. 31, 2016
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	$ 2,882	$ 8,763
Gross Amounts Offset in the balance sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	2,882	8,763
Financial Instruments	(1,058)	(1,705)
Cash Collateral Pledged	0	0
Net Amounts	1,824	7,058
Bank of America [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	537
Gross Amounts Offset in the balance sheet	0
Net Amounts of Assets Presented in the Balance Sheet	537
Financial Instruments	(79)
Cash Collateral Pledged	0
Net Amounts	458
J.P. Morgan Chase [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	1,036	1,492
Gross Amounts Offset in the balance sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	1,036	1,492
Financial Instruments	(236)	(442)
Cash Collateral Pledged	0	0
Net Amounts	800	1,050
Wells Fargo Bank [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	1,309	7,271
Gross Amounts Offset in the balance sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	1,309	7,271
Financial Instruments	(743)	(1,263)
Cash Collateral Pledged	0	0
Net Amounts	$ 566	$ 6,008