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Other (Expense) Income, Net (Tables)
6 Months Ended
Jan. 31, 2017
Other (Expense) Income, Net [Abstract]  
Schedule of other (expense) income, net

  Three Months Ended January 31,  Six Months Ended
January 31,
 
  2017  2016  2017  2016 
  (in thousands) 
Foreign currency transaction (losses) gains $(729) $(1,096) $1,330  $(2,258)
Gain on sale of marketable securities  305      305   543 
Gain on investments  32   236   295   80 
Other  (27)  626   44   791 
                 
Total other (expense) income, net $(419) $(234) $1,974  $(844)