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LEASES - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Lessee, Lease, Description [Line Items]      
Operating lease liabilities $ 115,584    
Operating lease expense $ 28,000 $ 33,000 $ 29,000
GEORGIA      
Lessee, Lease, Description [Line Items]      
Lease term 15 years    
Operating lease liabilities $ 40,000