Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION (Fair value assumptions) (Details)

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STOCK-BASED COMPENSATION (Fair value assumptions) (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]      
Risk-free interest rate, minimum   0.09% 1.89%
Risk-free interest rate, maximum 1.01% 1.19% 2.53%
Dividend yield 0.00% 0.00% 0.00%
Volatility factors, minimum   32.37% 27.63%
Volatility factors, maximum 42.61% 51.83% 28.12%
Weighted average expected life (in years) 6 years 4 months 24 days 2 years 6 months 3 days 6 years 29 days