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Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
May 17, 2023 | Dec. 14, 2022 | Jan. 05, 2022 | Apr. 30, 2022 | Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2023 | Apr. 30, 2022 | Nov. 30, 2022
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from exercise of stock options |  |  |  |  |  |  | $ 172 | $ 137 |
Number of exercised of stock options, value |  |  |  |  |  | $ 137 | 172 | 137 |
Share based compensation |  |  |  |  | $ 1,679 | $ 1,245 | $ 3,537 | 1,840 |
Shares remained available for repurchase under stock repurchase program |  |  |  |  | 4,900,000 |  | 4,900,000 |  |
Deferred Stock Units [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Estimated fair value of DSUs on date of grant |  |  |  |  | $ 5,200 |  | $ 5,200 |  |
Weighted average grant date fair value per DSU |  |  |  |  |  |  | $ 27.20 |  |
Unrecognized compensation cost related to non-vested DSUs |  |  |  |  | $ 2,900 |  | $ 2,900 |  |
Common Class B [Member] | 2015 Stock Option and Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock additionally authorized |  | 50,000 |  |  |  |  |  |  |
Proceeds from exercise of stock options |  |  |  |  |  |  | $ 200 | $ 100 |
Number of exercised of stock options shares |  |  |  |  |  |  | 12,500 | 10,000 |
Common Class B [Member] | Deferred Stock Units [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Deferred stock units, description |  |  |  |  |  |  | On November 30, 2022, the Company adopted an equity incentive program (under its 2015 Stock Option and Incentive Plan) in the form of grants of deferred stock units (“DSUs”) that, upon vesting, will entitle the grantees to receive shares of the Company’s Class B common stock. In the nine months ended April 30, 2023, the Company granted an aggregate of 193,225 DSUs to certain of its executive officers and other employees. The number of shares that will be issuable on each vesting date will vary between 50% to 200% of the number of DSUs that vest on that vesting date, depending on the market price for the underlying Class B common stock on the vesting date relative to the base price approved by the Compensation Committee of the Company’s Board of Directors of $25.45 per share (which was based on the market price at the time of the initial grants under this program). On May 17, 2023, the first vesting date under the program, in accordance with the program and based on certain elections made by grantees, the Company issued 41,945 shares of its Class B common stock for vested DSUs. Based on those elections, vesting for 30,909 DSUs was delayed until February 21, 2024. Subject to continued full time employment or other service to the Company, the remaining DSUs are scheduled to vest on February 21, 2024 and February 25, 2025. The grantees will have the right to elect a later vesting date no later than January 19, 2024 for the February 21, 2024 vesting date. A grantee will have the option to elect a later vesting date for one-half or all of the shares scheduled to vest on February 21, 2024 and any DSUs that do not vest based on the grantee’s election, will be eligible to vest on February 25, 2025. The Company estimated that the fair value of the DSUs on the date of grants was an aggregate of $5.2 million, which is being recognized on a graded vesting basis over the requisite service periods ending in February 2025. The Company used a risk neutral Monte Carlo simulation method in its valuation of the DSUs, which simulated the range of possible future values of the Company’s Class B common stock over the life of the DSUs. |  |
Number of deferred stock units granted |  |  |  |  |  |  | 193,225 |  |
Number of shares issued |  |  | 301,296 |  |  |  |  |  |
Common Class B [Member] | Deferred Stock Units [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of shares issued | 41,945 |  |  |  |  |  |  |  |
Common Class B [Member] | Deferred Stock Units [Member] | Subsequent Event [Member] | February 21, 2024 [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of shares vested | 30,909 |  |  |  |  |  |  |  |
Class B Common Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Aggregate purchase price of shares repurchased |  |  |  |  |  |  | $ 7,500 |  |
Aggregate repurchased shares |  |  |  |  | 8,000,000.0 |  | 8,000,000.0 |  |
Class B common stock shares repurchased |  |  |  |  |  |  | 280,130 |  |
Executive Officer [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Performance bonus paid in cash stock |  |  |  |  |  |  | $ 1,200 |  |
Executive Officer [Member] | Common Class B [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of shares |  |  |  |  |  |  | 24,543 |  |
Issuance of shares, value |  |  |  |  |  |  | $ 600 |  |
Number of restricted shares granted |  |  |  |  |  |  | 16,000 |  |
Share based compensation |  |  |  |  |  |  | $ 300 |  |
Vesting period |  |  |  |  |  |  | February 2025 |  |
Board of Directors [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Share price |  |  |  |  |  |  |  |  | $ 25.45
Howard S Jonas [Member] | Common Class B [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of exercised of stock options shares |  |  |  | 1.0 |  |  |  |  |
Exercise price of stock options |  |  |  |  |  | $ 14.93 |  | $ 14.93 |
Stock option expiration date |  |  |  |  |  | May 01, 2022 |  | May 01, 2022 |
Number of exercised of stock options shares |  |  |  | 528,635 |  |  |  |  |
Number of exercised of stock options, value |  |  |  | $ 14,900 |  |  |  |  |
Number of shares issued |  |  |  | 137,364 |  |  |  |  |
Aggregate purchase price of shares repurchased |  |  |  | $ 3,900 |  |  |  |  |
Employee [Member] | Common Class B [Member] | 2015 Stock Option and Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of restricted shares granted |  |  |  |  |  |  | 15,000 |  |
Share based compensation |  |  |  |  |  |  | $ 400 |  |
Employees [Member] | Class B Common Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Aggregate purchase price of shares repurchased |  |  |  |  |  |  | $ 300 | $ 9,000 |
Class B common stock shares repurchased |  |  |  |  |  |  | 13,547 | 200,438 |

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