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Equity (Details Narrative) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | ---
Feb. 21, 2024 | Dec. 21, 2023 | Dec. 13, 2023 | May 31, 2024 | Mar. 31, 2024 | Jan. 31, 2024 | Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2024 | Apr. 30, 2023
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash dividend |  |  |  |  |  |  |  |  |  | $ 1,269,000 |
Dividends declared per share |  |  |  |  |  |  |  | $ 0.05 |  | $ 0.05 |
Received cash from exercise of stock options |  |  |  |  |  |  |  |  |  | $ 172,000 | 172,000
Share Repurchase Program, Remaining Authorized, Number of Shares |  |  |  |  |  |  |  | 4,500,000 |  | 4,500,000 |
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  |  |  |  |  |  | $ 5,375,000 | 3,537,000
Exchange of outstanding shares percentage |  |  |  |  |  |  | 1.25% |  |  |  |
Exchange of NRS shares for Class B common stock |  |  |  |  |  |  |  |  |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Noncash Expense | [1] |  |  |  |  |  |  | $ 2,027,000 | $ 1,579,000 | 5,025,000 | 3,096,000
net2phone 2.0, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted common stock with holding employees outstanding shares percentage |  |  |  |  |  |  | 4.50% |  |  |  |
Amended And Restated Employment Agreement [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Noncash Expense |  |  |  |  |  |  |  | 1,500,000 |  | 3,000,000.0 |
Amended And Restated Employment Agreement [Member] | Deferred Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  |  |  |  | 200,000 |  | 200,000 |
Amended And Restated Employment Agreement [Member] | Contingent Bonus [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  |  |  |  |  |  | 900,000 |  | 900,000 |
Class A And Class B Common Stock[Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash dividend per share |  |  |  |  |  | $ 0.05 |  |  |  |  |
Cash dividend |  |  |  |  |  |  |  | $ 1,300,000 |  | $ 1,300,000 |
Class A And Class B Common Stock[Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividends declared per share |  |  |  |  | $ 0.05 |  |  |  |  |  |
Dividend paid date |  |  |  |  | Jun. 17, 2024 |  |  |  |  |  |
Dividend record date |  |  |  |  | Jun. 10, 2024 |  |  |  |  |  |
Common Class B [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares during period |  |  |  |  |  |  | 192,433 |  |  |  |
Exchange of outstanding shares percentage |  |  |  |  |  |  | 1.25% |  |  |  |
Exchange of NRS shares for Class B common stock |  |  |  |  |  |  | $ 100,000 |  |  |  |
Common Class B [Member] | net2phone 2.0, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vested shares |  |  |  |  |  |  | 500,000 |  |  |  |
Shares granted |  |  |  |  |  |  | 50,000 |  |  |  |
Offsetting income tax withholding liability |  |  |  |  |  |  | $ 3,600,000 |  |  |  |
Increase in non controlling interests |  |  |  |  |  |  | 53,000 |  |  |  |
Decrease in additional paid in capital |  |  |  |  |  |  | $ 3,610,000 |  |  |  |
Common Class B [Member] | Deferred Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Description |  |  |  |  |  |  |  |  |  | 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). |
Vested shares |  | 53,706 |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  | 147,540 |  |  |  |  |  |  |  |  |
Common Class B [Member] | 2024 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares, grant |  |  |  | 250,000 |  |  |  |  |  |  |
Common Class B [Member] | 2015 Stock Option and Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional number of shares authorized |  |  |  | 250,000 |  |  |  |  |  |  |
Received cash from exercise of stock options |  |  |  |  |  |  |  |  |  | $ 200,000 | $ 200,000
Shares issued |  |  |  |  |  |  |  |  |  | 12,500 | 12,500
Common Class B [Member] | Amended And Restated Employment Agreement [Member] | net2phone 2.0, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares granted |  |  | 50,000 |  |  |  |  |  |  |  |
Common Class B [Member] | Amended And Restated Employment Agreement [Member] | Bill Pereira [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares during period |  |  |  |  |  |  |  |  |  | 39,155 |
Stock Issued During Period, Value, New Issues |  |  |  |  |  |  |  |  |  | $ 1,500,000 |
Common Class B [Member] | Amended And Restated Employment Agreement [Member] | Bill Pereira [Member] | Deferred Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares granted |  |  | 23,500 |  |  |  |  |  |  |  |
Class B Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Number of Shares |  |  |  |  |  |  |  | 8,000,000.0 |  | 8,000,000.0 |
Treasury Stock, Shares, Acquired |  |  |  |  |  |  |  |  |  | 204,107 | 280,130
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  |  |  |  |  | $ 5,700,000 | $ 7,500,000
Class B Common Stock [Member] | Employees [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired |  |  |  |  |  |  |  |  |  | 41,994 | 13,547
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  |  |  |  |  | $ 1,500,000 | $ 300,000
[1] | Stock-based compensation included in: Technology and development expense & Selling, general and administrative expense

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