Estimated Annual Amortization Expense, Based on Current Values for Livin' Lite and Bison Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2013
Expected Amortization Expense [Line Items]
Estimated annual amortization expense, For the fiscal year ending July 31, 2014	$ 11,799
Estimated annual amortization expense, For the fiscal year ending July 31, 2015	11,484
Estimated annual amortization expense, For the fiscal year ending July 31, 2016	10,382
Estimated annual amortization expense, For the fiscal year ending July 31, 2017	10,170
Estimated annual amortization expense, For the fiscal year ending July 31, 2018	9,732
Estimated annual amortization expense, For the fiscal year ending July 31, 2019 and thereafter	60,166
Estimated annual amortization expense, Total	$ 113,733