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LEASES - Components of Lease Expense and Payments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Lessee, Lease, Description [Line Items]      
Operating lease cost $ 5,981 $ 6,142  
Short-term lease cost 677 509  
Variable lease cost 662 804  
Total operating lease cost 7,320 7,455  
Finance lease cost:      
Amortization of right-of-use asset 699 797  
Variable costs 203 248  
Interest costs 84 102  
Total finance lease cost 986 1,147  
Payments for lease liabilities 5,000 5,600  
Lease liabilities arising from ROU 2,900 3,700  
Finance leases cost included in property, plant and equipment 27,500   $ 26,600
Accumulated amortization related to finance leases 14,100   13,500
Principal payments, finance lease liabilities 249 $ 338  
Investing cash flows for finance lease liabilities 900    
Operating cash flows for finance lease liabilities 100    
Total 5,085   $ 5,459
Finance lease liability, current 1,000    
Repositioning of Wholesale Roaming Operations      
Finance lease cost:      
Right of use assets terminated 5,000    
Lease liability terminated 5,300    
Gain on lease termination $ 300