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LEASES - Components of Lease Expense (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
 Lease Expense      
Operating, selling, general and administrative expenses $ 35,100,000 $ 32,500,000  
Operating, asset impairments 0 1,800,000 $ 1,400,000
Variable 3,300,000 2,700,000  
Sublease income (1,900,000) (1,300,000)  
Finance:      
Amortization of lease assets 7,300,000 6,300,000  
Interest on lease liabilities 7,200,000 7,000,000.0  
Net lease expense $ 50,900,000 $ 48,900,000