OTHER GAINS (LOSSES) , NET - Components of Other Gains (Losses), Net (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Other Income and Expenses [Abstract]
Foreign currency exchange losses	$ (33)	$ 720	$ (601)	$ (1,351)
Gains, net on trading securities	0	0	0	1,876
Other, net	(81)	(1,412)	(231)	(1,512)
Other gains (losses), net	$ (114)	$ (692)	$ (832)	$ (987)

Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount of increase (decrease) in other comprehensive income, after tax, from changes classified as other.

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Amount of gain (loss) related to nonoperating activities, classified as other.

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Amount of gain (loss) realized from securities classified as trading.

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