Stock-Based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands									1 Months Ended		12 Months Ended
		Oct. 11, 2023	May 17, 2023	Dec. 14, 2022	Jan. 05, 2022	Dec. 15, 2021	Jan. 05, 2021	Dec. 31, 2020	Jun. 30, 2022	Feb. 28, 2022	Sep. 22, 2023	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021	Nov. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Proceeds from stock options exercised												$ 172	$ 137	$ 687
Number of exercised of stock options, value												$ 172	$ 137	687
Number of non-vested shares, vesting												165,000	3,000
Number of deferred stock units vested												35,000
Stock granted												198,000
Share based compensation	[1]											$ 4,518	$ 1,930	1,490
Stock based compensation												$ 4,518	1,930	1,490
Net2phone, Inc. [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding capital stock, percent								10.00%
Aggregate estimated fair value								$ 200
Stock Issued During Period, Shares, Restricted Stock Award, Gross								50
[custom:RestrictedStockContingentVestingArrangementsDescription]												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, net2phone 2.0’s valuation 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 net2phone 2.0 following the grant.
Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting description												Share awards generally vest on a graded basis over three years of service.
Unrecognized compensation												$ 400
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												10 months 24 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value												$ 500	1,000	200
Restricted Stock [Member] | National Retail Solutions [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation												$ 2,600
Aggregate estimated fair value									$ 3,300
Restricted Stock [Member] | February 25, 2025 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting description												There are 24,000 non-vested restricted shares at July 31, 2023 included in the table above that will vest on February 25, 2025 only if the Company’s Class B common stock closes above $50 per share for ten consecutive trading days prior to February 25, 2025, otherwise the 24,000 restricted shares will be forfeited.
Number of non-vested shares, vesting												24,000
Number of non-vested shares special terms												24,000
Deferred Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation												$ 2,300
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												8 months 12 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value												$ 900	$ 1,600	$ 1,500
Estimated fair value of DSUs on date of grant												$ 5,400
Board of Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share price															$ 25.45
Equity Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting description												Option awards generally vest on a graded basis over three years of service and have ten-year contractual terms.
Options granted												0	0	0
Proceeds from stock options exercised												$ 200	$ 100	$ 700
Number of exercised of stock options shares												12,500	10,000	81,041
Share-based compensation arrangement by share-based payment award, options, exercises in period, intrinsic value												$ 200	$ 19,700	$ 200
Common Class B [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Additional number of shares authorized				50,000		175,000
Share-based compensation arrangement by share-based payment award, number of shares authorized												1,800,000
Share-based compensation arrangement by share-based payment award, number of shares available for grant												100,000
Number of non-vested shares, vesting												25,000	3,000
Number of deferred stock units vested												21,000
Stock granted												44,000
Common Class B [Member] | Deferred Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of deferred stock units vested												1,333	1,334
Stock granted														4,000
Common Class B [Member] | Deferred Stock Units [Member] | Subsequent Event [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of deferred stock units vested											1,333
Common Class B [Member] | Deferred Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [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 DSUs that, upon vesting, will entitle the grantees to receive shares of the Company’s Class B common stock. 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 31,909 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 $5.4 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 vested			41,945		301,296		283,838
Common Class B [Member] | Deferred Stock Units [Member] | February 21, 2024 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares vested			31,909
Common Class B [Member] | Howard S Jonas [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of exercised of stock options shares												1,000,000.0
Exercise price of stock options												$ 14.93
Stock option expiration date												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
Number of shares issued, value												$ 3,900
Common Class B [Member] | Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock granted												15,000
Share based compensation												$ 400
Common Class B [Member] | Forecast [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Additional number of shares authorized		250,000
NRS Common Class B [Member] | National Retail Solutions [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding capital stock, percent									1.20%	0.40%
Stock based compensation										$ 1,200

[1] Stock-based compensation included in selling, general and administrative expenses