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LEASES - Components of Lease Expense and Payments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
LEASES    
Operating lease cost $ 20,386 $ 16,409
Short-term lease cost 2,402 2,712
Variable lease cost 3,874 4,059
Total operating lease cost 26,662 23,180
Payments for lease liabilities 19,400 16,100
Lease liabilities arising from ROU 11,800 7,800
Finance lease cost:    
Amortization of right-of-use asset 2,561 2,181
Variable costs 792 852
Total finance lease cost 3,353 3,033
Finance leases cost included in property, plant and equipment 30,800 25,400
Accumulated amortization related to finance leases $ 12,100 $ 9,500
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Property, Plant and Equipment, Net Property, Plant and Equipment, Net
Principal payments, finance lease liabilities $ 2,200  
Additional finance lease liabilities recognized 2,900  
Finance lease liability 6,052 $ 1,129
Finance lease liability, current $ 900