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LEASES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Lessee, Lease, Description [Line Items]      
Lease extension period (up to) 14 years    
Right-of-use asset $ 55,188 $ 66,191 $ 72,700
Lease liability obligations 53,901 66,208 $ 72,400
Operating lease expense 23,400 $ 25,000  
Chief Executive Officer      
Lessee, Lease, Description [Line Items]      
Operating lease expense $ 3,100    
Minimum      
Lessee, Lease, Description [Line Items]      
Remaining lease term 1 month    
Maximum      
Lessee, Lease, Description [Line Items]      
Remaining lease term 10 years