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SEGMENT INFORMATION - Additional Information (Detail) (USD $)
3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Oct. 31, 2012
Segment
Jul. 31, 2012
Oct. 31, 2012
China [Member]
Oct. 31, 2011
China [Member]
Jul. 31, 2012
China [Member]
Oct. 31, 2012
Netherlands [Member]
Oct. 31, 2011
Netherlands [Member]
Jul. 31, 2012
Netherlands [Member]
Oct. 31, 2012
Americas [Member]
Jul. 31, 2012
Americas [Member]
Oct. 31, 2012
Asia [Member]
Jul. 31, 2012
Asia [Member]
Oct. 31, 2012
Europe [Member]
Jul. 31, 2012
Europe [Member]
Oct. 31, 2012
Singapore [Member]
Jul. 31, 2012
Singapore [Member]
Oct. 31, 2012
Ireland [Member]
Jul. 31, 2012
Ireland [Member]
Oct. 31, 2012
Czech Republic [Member]
Jul. 31, 2012
Czech Republic [Member]
Segment Reporting Information [Line Items]                                        
Number of operating segments 6                                      
Number of reportable segments 4                                      
Percentage of long-lived assets located                 60.00% 63.00% 17.00% 18.00% 23.00% 19.00%            
Value of long-lived assets located $ 371,990,000 $ 342,571,000 $ 3,300,000   $ 3,300,000 $ 2,200,000   $ 2,300,000 $ 114,646,000 $ 101,931,000 $ 114,408,000 $ 111,660,000 $ 116,999,000 $ 105,472,000 $ 9,100,000 $ 9,200,000 $ 5,100,000 $ 4,800,000 $ 2,700,000 $ 3,400,000
Company generated revenue     $ 38,400,000 $ 41,200,000   $ 22,500,000 $ 32,400,000