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STOCK-BASED COMPENSATION (Details)
shares in Millions
12 Months Ended
Dec. 31, 2020
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period 10 years
Shares authorized 13
Minimum exercise price, as a percent of grant date fair value 100.00%
Minimum exercise price, as a percent of grant date fair value, awards to 10% shareholders 110.00%
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercisable period 1 year
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercisable period 3 years