DISCONTINUED OPERATIONS (Details Textual) (Product Line [Member], USD $)	1 Months Ended	3 Months Ended	6 Months Ended
	Aug. 31, 2012 employee	Jan. 31, 2013	Jan. 31, 2013	Apr. 28, 2012
Product Line [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected proceeds from divestiture of component				$ 550,000,000
Number of employees to be transferred	1,400
Proceeds From divestiture of component	535,000,000
Gain (loss) on the sale of product line		$ (2,945,000)	$ 397,338,000