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LEASES - Contractual Obligations Related to Operating Leases Under ASC 840 (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
Less than 1 year $ 22,096
1-3 years 33,825
3-5 years 18,379
More than 5 years 11,022
Total $ 85,322