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STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Total compensation expenses | $ 30,514 | $ 19,889 | $ 18,950
Total unrecognized compensation costs | $ 19,448 |  |
Period for recognition of compensation cost not yet recognized | 1 year 9 months 21 days |  |
Tax benefits from stock compensation expense | $ 3,532 | 4,775 | 4,550
2016 Equity Incentive Plan |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Number of shares authorized under stock option plan | 2,000,000 |  |
Number of shares available to be granted | 652,144 |  |
Performance Shares (PSUs) | Share-based Payment Arrangement, Tranche One |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Award vesting rights, minimum percentage of target compensation | 50.00% |  |
Performance Shares (PSUs) | Share-based Payment Arrangement, Tranche Three |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Award vesting rights, minimum percentage of target compensation | 150.00% |  |
Performance Shares (PSUs) | Minimum | Share-based Payment Arrangement, Tranche Two |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Award vesting rights, minimum percentage of target compensation | 50.00% |  |
Performance Shares (PSUs) | Maximum | Share-based Payment Arrangement, Tranche Two |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Award vesting rights, minimum percentage of target compensation | 150.00% |  |
Restricted Stock Units (RSUs) |  |  |
Stock Based Compensation And Stockholders Equity [Line Items] |  |  |
Total compensation expenses | $ 30,514 | 19,889 | 18,950
Fair Value of Vested RSUs | $ 24,226 | $ 10,906 | $ 13,227

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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