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LONG-TERM DEBT (Department of Economic and Community Development) (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 08, 2018 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Aug. 01, 2020 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |
Total debt |  | $ 1,022,000 |  | $ 1,022,000 |  |  | $ 519,000
Revenue, net of contractual allowances and adjustments |  | 1,645,000 | $ 1,199,000 | 3,127,000 | $ 2,116,000 |  |
Subsequent Events |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Accrued interest |  |  |  |  |  | $ 0 |
Department of Economic and Community Development (DECD) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Gross proceeds from grant received and loan | $ 400,000 |  |  |  |  |  |
Proceeds from grant | $ 100,000 |  |  |  |  |  |
Debt instrument, term | 10 years |  |  |  |  |  |
Debt instrument, maturity date | Dec. 31, 2027 |  |  |  |  |  |
Interest rate (as a percent) | 3.25% |  |  |  |  |  |
Total debt |  | 242,000 |  | 242,000 |  |  | 249,000
Term loan | Department of Economic and Community Development (DECD) |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from long-term debt | $ 300,000 |  |  |  |  |  |
Debt issuance costs, net | $ 31,000 | 23,000 |  | 23,000 |  |  | $ 24,000
Amortization of debt issuance cost |  |  |  | 2,000 | $ 2,000 |  |
2020 |  | 3,000 |  | 3,000 |  |  |
2021 |  | 3,000 |  | 3,000 |  |  |
2022 |  | 3,000 |  | 3,000 |  |  |
2023 |  | 3,000 |  | 3,000 |  |  |
2024 |  | 3,000 |  | $ 3,000 |  |  |
Term loan | Department of Economic and Community Development (DECD) | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amortization of debt issuance cost |  | $ 1,000 | $ 1,000 |  |  |  |

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