Derivative Financial Instruments Schedule of Offsetting of Derivative Liabilities (Details) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2016
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 11,749	$ 1,705
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	11,749	1,705
Financial Instruments	(2,540)	(1,705)
Cash Collateral Pledged	0	0
Net Amount	9,209	0
Bank of America [Member]
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	11,113
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Liabilities Presented in the Balance Sheet	11,113
Financial Instruments	(2,038)
Cash Collateral Pledged	0
Net Amount	9,075
J.P. Morgan Chase [Member]
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities		442
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Liabilities Presented in the Balance Sheet		442
Financial Instruments		(442)
Cash Collateral Pledged		0
Net Amount		0
Wells Fargo Bank [Member]
Offsetting of Derivative Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	636	1,263
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	636	1,263
Financial Instruments	(502)	(1,263)
Cash Collateral Pledged	0	0
Net Amount	$ 134	$ 0