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Net Fair Value of Commodity Price Risk (Detail) - USD ($) $ in Thousands | Jan. 02, 2016 | Jan. 03, 2015
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Liabilities | $ 14,887 |
Net Fair Value | 14,887 | $ 16,253
Level 1 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 11,946 |
Net Fair Value | 11,946 | 12,930
Level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 2,941 |
Net Fair Value | 2,941 | 3,323
Other Current Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 14,867 | 12,898
Other Current Liabilities | Level 1 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 11,926 | 10,873
Other Current Liabilities | Level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 2,941 | 2,025
Other LongTerm Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | 20 | 3,355
Other LongTerm Liabilities | Level 1 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities | $ 20 | 2,057
Other LongTerm Liabilities | Level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Liabilities |  | $ 1,298

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