Financial Contracts Hedging Commodity and Interest Rate Risk (Detail) - Cash Flow Hedging $ in Thousands	Oct. 10, 2015 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 174,413
Wheat Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	144,731
Soybean Oil Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	20,247
Natural Gas Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 9,435