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Acquisition of 3dent Technologies, LLC (Details Narrative) - USD ($) |  | 12 Months Ended
--- | --- | ---
Feb. 01, 2021 | Apr. 30, 2021 | Apr. 30, 2020
Number of common stock value |  |  | $ 295,000
Selling, general and administrative expenses |  | $ 7,772,000 | $ 6,916,000
Performance-based Stock Options [Member] |  |  |
Net loss included equity compensation expense |  | $ 231,201 |
Trade Names [Member] |  |  |
Intangible asset estimated lives |  | 12 years |
Customer Relationship [Member] |  |  |
Intangible asset estimated lives |  | 10 years |
Acquisition-related Costs [Member] |  |  |
Selling, general and administrative expenses |  | $ 152,000 |
3Dent Acquisition [Member] |  |  |
Number of common stock issued, shares | 361,991 |  |
Number of common stock value | $ 360,000 |  |
Fair value of adjusted restricted shares on acquisition |  | $ 1,200,000 |

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