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LEASES - Operating and Financing leases (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019
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Balance sheet presentation of our operating and financing leases |  |  |
Operating lease right-of-use assets | $ 335,000 | $ 519,000 | $ 750,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Operating lease right-of-use assets |  |
Finance lease assets | $ 175,000 | 184,000 |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Finance lease assets |  |
Total lease assets | $ 510,000 | 703,000 |
Operating lease obligations, current | $ 225,000 | 209,000 |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Operating lease obligations, current |  |
Finance lease obligations | $ 48,000 | 52,000 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Finance lease obligations |  |
Operating lease liabilities, less current maturities | $ 92,000 | 317,000 |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Operating lease liabilities, less current maturities |  |
Finance lease liabilities, less current maturities | $ 116,000 | 119,000 |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Finance lease liabilities, less current maturities |  |
Total lease liabilities | $ 481,000 | $ 697,000 |

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