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Major Customers (Tables)
3 Months Ended
Jul. 31, 2013
Major Customers [Abstract]  
Major Customers
The following table summarizes major customers who individually accounted for more than 10% of revenues for the periods presented:

 
Three Months Ended
  
July 31, 2013
 
July 31, 2012
Revenue:
     
From unrelated customers
One customer from the gaming segment accounted for 86% of total revenue.
 
One customer from the voting segment accounted for 19% of total revenue.
       
From related customers
No individual customer accounted for more than 10% of total revenue.
 
Two customers from the gaming segment accounted for 65% of total revenue.