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OPERATING LEASES - Summary of Maturities of Lease liabilities (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Leases [Abstract]  
2020 $ 1,680
2021 1,223
2022 179
2023 12
Total future lease payments 3,094
Less: Imputed interest 135
Operating Lease, Liability $ 2,959