Annual report pursuant to Section 13 and 15(d)

SETTLEMENTS, COMMITMENTS AND CONTINGENCIES - Future minimum lease payments (Details)

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SETTLEMENTS, COMMITMENTS AND CONTINGENCIES - Future minimum lease payments (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2018 $ 3,561
2019 3,589
2020 3,250
2021 3,114
2022 3,119
Thereafter 34,600
Operating leases, future minimum payments due $ 51,233