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Share-Based Compensation (Details Narrative) - USD ($) |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 01, 2021 | Jan. 31, 2021 | Jan. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020 | Apr. 30, 2021 | Jan. 18, 2018 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  | 0 |  |  |
3Dent Acquisition [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
[custom:FairValueOfBasePurchasePrice-0] | $ 1,451,584 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 361,991 |  |  |  |  |  |  |
Business Acquisition, Share Price | $ 4.01 |  |  |  |  |  |  |
[custom:AdjustedFairValue-0] | $ 1,161,267 |  |  |  |  |  |  |
[custom:BusinessComibinationQuarterlyCompensationExpensesConsiderationPaid-0] | $ 171,000 |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  |  |  | $ 200,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares |  |  |  | 265,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term |  |  |  | 9 years 4 months 24 days |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 110,000 | $ 90,000 |  |  |
Share-based Payment Arrangement, Option [Member] | Performance-based Stock Options [Member] | Two Executives [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  | 81,337 | 40,668 |  |  |  |
[custom:StockOptionsVestingPeriodDescription] |  |  | The awards vest over 2 years if there is positive total shareholder return (e.g. share price increase) as measured by the 5-day (January 11-15, 2021) and (January 10-14, 2022) share price volume weighted average price (“VWAP”) |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Performance-based Stock Options [Member] | Employees and Executives [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 344,723 |  | 343,456 |  |  |  |
[custom:StockOptionsVestingPeriodDescription] |  | The awards vest over 2 years provided there is positive total shareholder return (e.g. share price increase) as measured by the closing share price on January 14, 2022 and January 14, 2023. |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Subject to Service- Based Vesting Requirements [Member] | Employee [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  | 66,667 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  | 51,547 |  |  |  |
Employee Stock Option One [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  |  |  | $ 19,000 |  |  |  |
Non-vested Stock [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount |  |  |  | $ 400,000 |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  | 1 year 2 months 12 days |  |  |  |
Performance Shares [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  |  |  | $ 37,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares |  |  |  |  |  | 377,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term |  |  |  | 9 years 4 months 24 days |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 95,000 | 8,000 |  |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount |  |  |  | $ 500,000 |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  | 1 year 4 months 24 days |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value |  |  |  | $ 0 |  |  |  |
Performance Shares [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Description and Terms |  |  |  | The analysis required a Monte Carlo simulation due to the performance vesting schedule. These performance-based shares only vest in the event that the future stock price increases above the closing price of June 18, 2021 of 2.37 per share. A total of 50% of the performance-based shares will vest if the closing price of the Company’s stock on June 18, 2022, exceeds $2.37 per share, and 50% of the options will vest if the closing price of the Company’s stock on June 18, 2023, exceeds the closing price on June 18, 2022 |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 14,000 | 5,000 |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  | 6 months |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  | 100,000 |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount |  |  |  | $ 202,000 |  |  |  |
Restricted Stock [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights |  |  |  | The vesting of the performance-based shares is contingent upon the future closing share price on June 18, 2022, and June 18, 2023. |  |  |  |
Equity Option [Member] | Subject to Service- Based Vesting Requirements [Member] | Employee [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  | $ 0 | $ 12,000 |  |  |
Time Based [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  | 33,333 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  | 2 years |  |  |  |
2015 Omnibus Incentive Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  | 1,332,036
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  | 193,928 |  |  |  |
Two Thousand And Eighteen Inducement Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  | 11,487 |  |  | 25,000 |

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