INCOME TAXES (Details 4) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013		Jul. 31, 2012
Income Taxes [Line Items]
Other current assets	$ 37,653	[1]	$ 63,656	[1]
Other non-current assets	16,998	[1]	95,182	[1]
Accrued liabilities	(1,718)	[1]	(1,052)	[1]
Deferred income taxes	(31,524)		(8,880)
Net deferred tax asset	21,409		148,906
Other current assets [Member]
Income Taxes [Line Items]
Other current assets	37,653		63,656
Other non-current assets [Member]
Income Taxes [Line Items]
Other non-current assets	16,998		95,182
Accrued liabilities [Member]
Income Taxes [Line Items]
Accrued liabilities	$ (1,718)		$ (1,052)

[1] See Note 11, Income Taxes, for further discussion.