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Other (Expense) Income, Net (Tables)
12 Months Ended
Jul. 31, 2018
Other (Expense) Income, Net [Abstract]  
Schedule of other (expense) income, net
Year ended July 31 
(in thousands)
 2018  2017  2016 
Foreign currency transaction (losses) gains $(2,107) $287  $980 
(Loss) gain on marketable securities  (16)  323   543 
(Loss) gain on investments  (6)  355   (405)
Other  781   (148)  931 
TOTAL $(1,348) $817  $2,049