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SCHEDULE OF STOCK OPTION ACTIVITIES (Details) - $ / shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Number of shares, Beginning Balance | 789,500 | 749,000 | 635,000
Weighted average exercise price, Beginning Balance | $ 2.78 | $ 2.42 | $ 1.35
Number of shares, Granted | 5,000 | 170,000 | 172,000
Exercise price per share, Granted | $ 3.61 | $ 3.61 | $ 2.44
Weighted average exercise price, Granted | $ 3.61 | $ 3.61 | $ 2.44
Number of shares, Cancelled or expired | (3,000) | (34,799) | (13,000)
Exercise price per share, Cancelled or expired | $ 3.61 |  |
Weighted average exercise price, Cancelled or expired | $ 3.61 | $ 2.30 | $ 2.75
Number of shares, Exercised | (22,500) | (94,701) | (45,000)
Weighted average exercise price, Exercised | $ 2.53 | $ 1.58 | $ 0.88
Number of shares, Ending Balance | 769,000 | 789,500 | 749,000
Weighted average exercise price, Ending Balance | $ 2.82 | $ 2.78 | $ 2.42
Number of shares Exercisable, Ending Balance | 539,000 | 564,500 |
Weighted average exercise price Exercisable, Ending Balance | $ 2.69 | $ 2.63 |
Minimum [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Exercise price per share, Beginning Balance | 1.42 | 0.75 | 0.75
Exercise price per share, Cancelled or expired |  | 1.42 | 2.44
Exercise price per share, Exercised | 2.44 | 0.75 | 0.75
Exercise price per share, Ending Balance | 1.42 | 1.42 | 0.75
Exercise price per share Exercisable, Ending Balance | 1.42 | 1.42 |
Maximum [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Exercise price per share, Beginning Balance | 4.13 | 4.13 | 1.75
Exercise price per share, Cancelled or expired |  | 3.46 | 3.46
Exercise price per share, Exercised | 3.46 | 3.46 | 1.05
Exercise price per share, Ending Balance | 4.13 | 4.13 | $ 4.13
Exercise price per share Exercisable, Ending Balance | $ 4.13 | $ 4.13 |

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