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STOCK-BASED COMPENSATION - Valuation Assumptions (Detail)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Time-based stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected life (in years) 4 years 2 months 12 days 4 years 4 months 24 days
Volatility 52.00% 55.00%
Interest rate 1.00% 2.00%
Dividend yield 0.00% 0.00%
Market Performance Based Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected life (in years) 1 year 2 months 12 days  
Volatility 52.00%  
Interest rate 1.00%  
Dividend yield 0.00%