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NOTES RECEIVABLE (Details Narrative) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Aug. 16, 2019 | Jun. 28, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Change in notes receivable |  |  |  | $ 194,000 |  |
Transformer Business Units [Member] | Subordinated Debt [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Principal amount |  |  |  |  | $ 7,500,000 | $ 7,500,000
Interest rate |  |  | 4.00% |  |  |
Maturity date |  |  | Dec. 31, 2022 |  |  |
Cash payment for promissory note |  | $ 1,800,000 |  |  |  |
Change in notes receivable | $ 194,000 |  |  |  |  |
Revaluation of note |  |  | $ 428,000 |  |  |
Carrying value |  |  | $ 5,800,000 |  |  |
Transformer Business Units [Member] | Subordinated Debt [Member] | First Seller Note [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Principal amount |  | $ 3,200,000 |  |  | 5,000,000 | 5,000,000
Transformer Business Units [Member] | Subordinated Debt [Member] | Second Seller Note [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Principal amount |  |  |  |  | $ 2,500,000 | $ 2,500,000

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