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LEASES - Lease Cost (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
LEASES  
Operating lease cost $ 10,836
Finance lease cost  
Amortization of right-of-use assets 75
Interest of lease liabilities 6
Sublease income (33)
Short-term lease cost 368
Variable lease cost 1,217
Total lease cost $ 12,469