Receivables and Financing Arrangements - Additional Information (Detail) (USD $)	Jul. 31, 2013	Jul. 31, 2012
Receivables [Abstract]
Amount of the Credit Card Receivables	$ 49,948,000	$ 50,831,000
Percentage of Credit Card Receivables as recorded in accounts receivable considered current	97.00%	97.00%
Allowance for doubtful accounts for estimated losses associated with the Credit Card Receivables	1,500,000	1,500,000
Current portion of carrying amount of financing arrangements including accrued interest	7,807,000
Non-current portion of carrying amount of financing arrangements including accrued interest	$ 64,425,000	$ 58,507,000