Segment Information and Significant Customers - Schedule of Long-lived Assets by Geographic Region (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2015
Jul. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 30,360 $ 27,261
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 20,217 18,242
India [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets 5,907 4,894
All other countries [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 4,236 $ 4,125