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LONG-TERM DEBT (Paycheck Protection Program.) (Details) - USD ($) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Apr. 23, 2020
Debt Instrument [Line Items] |  |  |
Gain on forgiveness of Paycheck Protection Program loan | $ 794,000 |  |
Paycheck Protection Program |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount |  | $ 600,000 |
Payroll Cost |  | 800,000 |
Long-term Debt |  | $ 200,000 |
Gain on forgiveness of Paycheck Protection Program loan | $ 800,000 |  |
Unsecured Debt [Member] | Paycheck Protection Program | Promissory notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, face amount |  |  | $ 787,200

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