Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments for Non-Cancelable Operating Leases (Details)

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COMMITMENTS AND CONTINGENCIES - Schedule of Future Minimum Lease Payments for Non-Cancelable Operating Leases (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2018 $ 7,062
2019 6,405
2010 5,900
2021 5,027
2022 4,100
Thereafter 5,478
Total future minimum lease payments due $ 33,972