ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
Accounts payable	$ 135,650	$ 133,071
Accrued payroll	20,379	12,734
Accrued taxes	16,716	15,166
Accrued and straight-line rent	11,955	11,904
Other	35,858	32,207
Accounts payable and accrued liabilities	$ 220,558	$ 205,082