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STOCK-BASED COMPENSATION (Details Narrative) - USD ($) |  |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Feb. 12, 2019 | Mar. 22, 2018 | Jan. 31, 2019 | Mar. 31, 2018 | Jan. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Restricted Stock Units (RSUs) [Member] | Director [Member] |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  | $ 250,000 | $ 273,000
Restricted stock units granted |  |  | 75,350 |  | 58,578 |  |
Vesting period |  |  | 1 year |  | 1 year |  |
Stock Awards [Member] | Granted In 2016 [Member] |  |  |  |  |  |  |
Stock awards forfeited (shares) |  |  |  | 12,330 |  |  |
Stock Awards [Member] | Granted In 2017 [Member] |  |  |  |  |  |  |
Stock awards forfeited (shares) |  |  |  | 9,130 |  |  |
Stock Awards [Member] | Employees [Member] |  |  |  |  |  |  |
Number of common shares granted |  |  |  | 68,764 |  | 5,130 | 5,550
Number of shares returned for employee's withholding taxes (shares) | 1,221 | 7,552 |  |  |  |  |
Value of shares returned for employee's withholding taxes | $ 7,893 | $ 62,000 |  |  |  |  |
Stock Awards [Member] | Employees [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  | $ 10,000 |
Stock Awards [Member] | Employees [Member] | Cost of Sales [Member] |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  | 36,000 |
Stock Awards [Member] | Employees [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  | 85,000 | $ 76,600
Stock Awards [Member] | Employees [Member] | Cost of Sales [Member] |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  | $ 16,100 | $ 16,100
Stock Option Plans [Member] |  |  |  |  |  |  |
Number of options exercised |  |  |  |  |  | 35,000 |
Fair value of shares on exercise date |  |  |  |  |  | $ 231,003 |
Shares received in exercise of options for exchange (shares) |  |  |  |  |  | 34,478 |

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