Fair Value - Summary of Assets and Liabilities Measured at Estimated Fair Value on Recurring basis (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Dec. 28, 2014
Liabilities
Derivative financial instruments		$ 3,156
Recurring Basis
Liabilities
Derivative financial instruments		3,156
Total liabilities		3,156
Recurring Basis | Level 2
Liabilities
Derivative financial instruments	$ 770	3,156
Total liabilities	$ 770	$ 3,156