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LEASES, COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Rental Payments for Operating Leases (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2019 $ 3,133
2020 1,018
2021 550
2022 506
2023 373
Thereafter 621
Total future minimum lease payments $ 6,201