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COMMITMENTS AND CONTINGENCIES - Narrative (Details)
12 Months Ended 19 Months Ended
May 30, 2019
USD ($)
Dec. 31, 2021
USD ($)
state
country
territory
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Commitments and Contingencies Disclosure [Abstract]          
Operating lease, rent expense   $ 2,400,000 $ 2,200,000 $ 2,100,000  
Amount of settlement fund created $ 3,250,000        
Remaining balance of settlement liabilities   0 0   $ 0
Settlement amount and related legal fees incurred   $ 0 $ 100,000 $ 3,700,000 $ 3,800,000
Number of states in which entity operates | state   50      
Number of territories in which entity operates | territory   2      
Number of countries in which entity operates | country   3