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LEASES - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating
2021	$ 134
2022	131
2023	0
Total lease payments	265
Less imputed interest	(10)
Present value of lease liabilities	255
Less current portion of lease liabilities	(126)	$ (108)
Long-term operating lease liabilities	129	235
Finance
2021	236
2022	183
2023	18
Total lease payments	437
Less imputed interest	(16)
Present value of lease liabilities	421
Less current portion of lease liabilities	(238)	(229)
Long-term finance lease liabilities	$ 183	$ 421

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