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REVENUE RECOGNITION - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Capitalized Contract Cost [Line Items]          
Deferred contract acquisition costs $ 6.2   $ 6.2   $ 8.0
Amortization of deferred contract costs 2.7 $ 2.6 8.3 $ 7.8  
Variable consideration from unredeemed vouchers sold in prior periods $ 7.4 $ 19.1 $ 9.4 $ 31.8  
Minimum          
Capitalized Contract Cost [Line Items]          
Deferred contract acquisition cost recognition period 12 months   12 months    
Maximum          
Capitalized Contract Cost [Line Items]          
Deferred contract acquisition cost recognition period 18 months   18 months