Derivative Financial Instruments Scheduel of Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2016
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	$ 2,540	$ 8,763
Gross Amounts Offset in the balance sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	2,540	8,763
Financial Instruments	(2,540)	(1,705)
Cash Collateral Pledged	0	0
Net Amounts	0	7,058
Bank of America [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	2,038
Gross Amounts Offset in the balance sheet	0
Net Amounts of Assets Presented in the Balance Sheet	2,038
Financial Instruments	(2,038)
Cash Collateral Pledged	0
Net Amounts	0
J.P. Morgan Chase [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets		1,492
Gross Amounts Offset in the balance sheet		0
Net Amounts of Assets Presented in the Balance Sheet		1,492
Financial Instruments		(442)
Cash Collateral Pledged		0
Net Amounts		1,050
Wells Fargo Bank [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts of Recognized Assets	502	7,271
Gross Amounts Offset in the balance sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	502	7,271
Financial Instruments	(502)	(1,263)
Cash Collateral Pledged	0	0
Net Amounts	$ 0	$ 6,008