Quarterly report pursuant to Section 13 or 15(d)

LEASES (Lease Related Costs) (Details)

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LEASES (Lease Related Costs) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Finance lease cost    
Amortization of right-of-use assets $ 1,467 $ 1,532
Interest on lease liabilities 325 341
Total finance lease cost 1,792 1,873
Operating lease cost    
Operating lease cost 8,904 9,267
Short-term lease cost 340 428
Variable lease cost 4,008 2,788
Total operating lease cost 13,252 12,483
Total lease cost $ 15,044 $ 14,356