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OTHER LONG-TERM LIABILITIES- Additional informtaion (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($) shares
OTHER LONG-TERM LIABILITIES |
Net present value | $ | $ 3,303,330
Purchase price is payable | $ | $ 1,101,110
Series IV Preferred Stock |
OTHER LONG-TERM LIABILITIES |
Preferred shareholders as a result of private stock purchases | shares | 320,333
Series V Preferred Stock |
OTHER LONG-TERM LIABILITIES |
Preferred shareholders as a result of private stock purchases | shares | 25,000

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