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Derivative Financial Instruments Scheduel of Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands | Oct. 01, 2017 | Dec. 31, 2016
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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

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