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LEASES - Assets and liabilities related to operating leases recorded on balance sheet (Details) - ASU No. 2016-02, Leases (Topic 842) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Liabilities: |  |
Total lease liabilities | $ 122 | $ 157
Other assets |  |
Assets: |  |
Operating lease right-of-use assets | 124 | 159
Accrued expenses and other liabilities |  |
Liabilities: |  |
Current portion of operating lease liabilities | 52 | 47
Other long-term liabilities |  |
Liabilities: |  |
Long-term operating lease liabilities | $ 70 | $ 110

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