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SHAREHOLDERS’ EQUITY - Additional Information (Details) | 12 Months Ended |
--- | --- | ---
Jul. 31, 2021 USD ($) class_common_stock vote plan shares | Jul. 25, 2020 USD ($) shares | Sep. 30, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of common stock classes | class_common_stock | 2 |  |
Common stock cash dividends, percent Class A is entitled greater than Class B | 54.00% |  |
Preferred stock shares authorized (in shares) | shares | 10,000,000 | 10,000,000 |
Preferred stock shares issued (in shares) | shares | 0 | 0 |
Number of share-based compensation plans | plan | 2 |  |
Non-cash share-based compensation | $ 2,522,000 | $ 2,958,000 |
Income tax benefit recognized | $ 633,000 | 202,000 |
Weighted-average remaining contractual term of options outstanding | 2 years 7 months 6 days |  |
Aggregate intrinsic value of options outstanding | $ 0 |  |
Aggregate intrinsic value of options exercisable | 0 |  |
Fair value of restricted shares vested | 363,000 | 5,968,000 |
Unrecognized compensation costs related to nonvested stock options and restricted stock granted | $ 4,172,000 |  |
Weighted-average period of compensation cost expected to be recognized | 1 year 7 months 6 days |  |
2016 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares remaining for future grants (in shares) | shares | 1,078,000 |  |
Class A Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of votes entitled per share | vote | 1 |  |
Authorized amount of share repurchase program |  |  | $ 5,000,000
Number of shares repurchased |  | 2,482,000 |
Authorized amount remaining in share repurchase program | $ 3,203,000 | 3,203,000 |
Class A Common Stock | 2016 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares authorized | shares | 1,200,000 |  |
Class A Common Stock | 2016 Plan | Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Class B Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of votes entitled per share | vote | 10 |  |
Percentage of voting power (greater than) | 50.00% |  |
Withholding In Satisfaction Of Taxes On Vested Equity Award [Member] | Class A Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares repurchased |  | $ 1,907,000 |

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