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Equity (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 05, 2021 | Dec. 31, 2020 | Jan. 31, 2021 | Jan. 31, 2020
Equity (Details) [Line Items] |  |  |  |
Proceeds from stock options exercised (in Dollars) |  |  | $ 686 | $ 276
Restricted stock contingent vesting arrangements, description |  |  | The restricted shares will vest if: (a) for any fiscal quarter of net2phone 2.0 between November 1, 2020 and October 31, 2023, net2phone 2.0 records subscription revenue that is at least $18 million, and (b) as of October 31, 2023, the valuation of net2phone 2.0 is $100 million or more. The restricted shares will also vest in the event, prior to October 31, 2023, net2phone 2.0 or its assets are sold at an equity valuation and on a cash-free basis of $100 million or more, regardless of whether the revenue threshold was satisfied prior thereto. The restricted shares entitle each grantee to proceeds only on a sale, spin-off, initial public offering, or other monetization of net2phone 2.0 and have protection from dilution for the first $15 million invested in the net2phone 2.0 following the grant. |
net2phone 2.0, Inc [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Percentage of outstanding common stock |  | 5.00% |  |
Aggregate estimated fair value of equity (in Dollars) |  |  | $ 200 |
Howard S. Jonas [Member] | net2phone 2.0, Inc [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Number of restricted shares |  | 50 |  |
Stock Repurchases [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Shares remained available for repurchase under the stock repurchase program |  |  | 5,800,000 |
Common Class B [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Aggregate repurchased shares |  |  | 8,000,000.0 |
Class B common stock for vested shares | 283,838 |  |  |
Proceeds from stock options exercised (in Dollars) |  |  | $ 700 | $ 300
Class B common stock shares repurchased |  |  | 81,041 | 32,551
Common Class B [Member] | Deferred Stock Units [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Unvested DSUs outstanding |  |  | 154,169 |
Common Class B [Member] | Employees [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Class B common stock shares repurchased |  |  | 109,381 | 37,348
Aggregate purchase price of shares repurchased (in Dollars) |  |  | $ 1,300 | $ 300
Vesting for DSUs | 19,919 |  |  |
Common Class B [Member] | Stock Repurchases [Member] |  |  |  |
Equity (Details) [Line Items] |  |  |  |
Class B common stock shares repurchased |  |  | 463,792 |
Aggregate purchase price of shares repurchased (in Dollars) |  |  | $ 2,800 |

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