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Other (Expense) Income, Net (Tables)
12 Months Ended
Jul. 31, 2015
Other (Expense) Income, Net [Abstract]  
Schedule of Other (Expense) Income, Net

          
Year ended July 31 
(in thousands)
 2015  2014  2013 
Foreign currency transaction (losses) gains $(1,704) $(5,883) $2,538 
Gain on investments  1,447   1,218   2,664 
Gain on modification and early termination of note payable        238 
Other  (431)  (35)  (57)
TOTAL $(688) $(4,700) $5,383