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COMMITMENTS AND CONTINGENCIES, LEASE OTHER INFORMATION (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
COMMITMENTS AND CONTINGENCIES  
Right-of-use assets obtained in exchange for new operating lease liabilities $ 1,475
Weighted-average remaining lease term - operating leases (years) 4 years 7 months 6 days
Weighted-average discount rate - operating leases 7.00%