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Components of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Jul. 31, 2013
Inventory [Line Items]    
Material and purchased components $ 22,394 $ 15,379
Work-in-process 23,806 2,887
Finished equipment, including inventory consigned to customers 23,470 10,873
Total inventories $ 69,670 $ 29,139