Equity Investment - Additional Information (Detail) $ in Thousands	3 Months Ended
Oct. 31, 2018 USD ($)
TH2
Schedule of Equity Method Investments [Line Items]
Losses from investment	$ 1,483

- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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