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LEASES - Future minimum lease payments (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Future total rentals on our non-cancellable operating leases under the previous lease standard |  |  |
Aggregate |  |  | $ 223,000
2019 |  |  | 55,000
2020 |  |  | 54,000
2021 |  |  | 52,000
2022 |  |  | 52,000
2023 |  |  | $ 10,000
Initial lease term (in months) |  | 36 months |
2020 | $ 235,500 |  |
2021 | 235,500 |  |
2022 | 58,875 |  |
Total received leases | 529,875 |  |
Rental income | 147,000 |  |
ASU No. 2016-02, Leases (Topic 842) |  |  |
Maturity of lease liabilities |  |  |
2020 | 52,000 |  |
2021 | 52,000 |  |
2022 | 52,000 |  |
2023 | 10,000 |  |
Total lease payments | 166,000 |  |
Less: Amounts representing interest | (9,000) |  |
Lease liabilities | $ 157,000 |  |

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