INCOME TAXES - Additional Information (Detail) (USD $)	3 Months Ended
	Oct. 31, 2012 Y	Jul. 31, 2012
Income Taxes [Line Items]
Unrecognized tax benefits related to federal, state and foreign taxes	$ 1,400,000	$ 1,300,000
Liabilities for interest expense related to uncertain tax positions	86,000	78,000
Liabilities for penalty expense related to uncertain tax positions	0	0
Unrecognized tax benefits to be reversed in next twelve months due to expiration of statute of limitations	$ 600,000
Stockholder owning ownership on corporation's securities percentage	5.00%
Stockholder owning ownership on corporation's securities rolling period	3
Tax Benefit Preservation Plan, adoption date	October 17, 2011
Any person acquiring shares of the Company's securities holding percentage as amended by Tax Plan which protects Tax Benefits	4.99%
USA [Member] | Federal and State tax Authority [Member]
Income Taxes [Line Items]
Tax examinations tax period	Tax years ended July 31, 2009 through July 31, 2012
Europe [Member] | Foreign tax Authority [Member]
Income Taxes [Line Items]
Tax examinations tax period	2006 through 2012 tax years
Asia [Member] | Foreign tax Authority [Member]
Income Taxes [Line Items]
Tax examinations tax period	2002 through 2012 tax years