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LEASES - Future Minimum Lease Payments Under Operating Leases (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
2017 $ 2,685
2018 2,062
2019 1,302
2020 202
2021 0
Thereafter 0
Total future minimum lease payments $ 6,251