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Net Fair Value of Commodity Price Risk (Detail) - USD ($) $ in Thousands | Apr. 23, 2016 | Jan. 02, 2016
--- | --- | ---
Derivative Instruments, Gain (Loss) [Line Items] |  |
Assets | $ 323 |
Liabilities | (8,932) | $ (14,887)
Net Fair Value | (8,609) | (14,887)
Level 1 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Assets | 323 |
Liabilities | (6,719) | (11,946)
Net Fair Value | (6,396) | (11,946)
Level 2 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities | (2,213) | (2,941)
Net Fair Value | (2,213) | (2,941)
Other LongTerm Assets |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Assets | 323 |
Other LongTerm Assets | Level 1 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Assets | 323 |
Other Current Liabilities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities | (8,932) | (14,867)
Other Current Liabilities | Level 1 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities | (6,719) | (11,926)
Other Current Liabilities | Level 2 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities | $ (2,213) | (2,941)
Other LongTerm Liabilities |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities |  | (20)
Other LongTerm Liabilities | Level 1 |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Liabilities |  | $ (20)

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