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COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 $ 2,624
2020 2,526
2021 2,322
2022 2,188
2023 632
Thereafter 0
Total $ 10,292