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LIQUIDITY (Narrative) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021 | Feb. 26, 2021 | Jun. 30, 2020
Net income | $ 6,747,435 | $ 2,470,882 |  |  |
Net cash used in operations | 4,231,439 | 4,019,560 |  |  |
Working capital deficit | 2,167,058 |  |  |  |
Accumulated deficit | 39,488,150 | $ 32,740,715 |  |  |
Proceeds from offering | $ 8,100,000 |  |  |  |
Subsequent Event [Member] |  |  |  |  |
Amount of investment by shareholders in form of newly designated Series C Convertible Preferred Stock |  |  | $ 4,500,000 | $ 4,500,000 |
PPP/CARES Act program [Member] |  |  |  |  |
Loan amont |  |  |  |  | $ 1,400,000

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