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COMMITMENTS, CONTINGENCIES AND LITIGATION - Operating Lease (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 $ 7,980
2020 7,616
2021 7,616
2022 7,108
2023 5,407
Thereafter 3,757
Operating leases, future minimum payments due, Total $ 39,484