Financial Contracts Hedging Commodity Risk (Detail) - Cash Flow Hedging $ in Thousands	Oct. 06, 2018 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate Notional Amount	$ 192,220
Wheat Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate Notional Amount	139,152
Soybean Oil Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate Notional Amount	22,825
Natural Gas Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate Notional Amount	14,146
Corn Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate Notional Amount	$ 16,097