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Other Income (Expense), Net (Tables)
12 Months Ended
Jul. 31, 2019
Other Income and Expenses [Abstract]  
Schedule of income (expense), net
Year ended July 31
(in thousands)
  2019   2018   2017 
Foreign currency transaction (losses) gains  $(696)  $(2,107)  $287 
(Loss) gain on marketable securities       (16)   323 
Gain (loss) on investments   1,779    (6)   355 
Other   (401)   781    (148)
TOTAL  $682   $(1,348)  $817