Annual report pursuant to Section 13 and 15(d)

LEASES - Lease Related Costs (Details)

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LEASES - Lease Related Costs (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Finance lease cost  
Amortization of right-of-use assets $ 6,305
Interest on lease liabilities 1,313
Total finance lease cost 7,618
Operating lease cost  
Operating lease cost 36,236
Short-term lease cost 2,288
Variable lease cost 16,667
Total operating lease cost 55,191
Total lease cost $ 62,809