Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Share-Based Compensation) (Details)

v3.20.4
NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Share-Based Compensation) (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Time-based stock options | Maximum    
Share Based Compensation    
Vesting period 48 months  
Performance based stock options operating income margins    
Share Based Compensation    
Operating income margin, one 6.00%  
Operating income margin, two 8.00%  
Operating income margin, three 10.00%  
RSUs | Minimum    
Share Based Compensation    
Vesting period 12 months  
RSUs | Maximum    
Share Based Compensation    
Vesting period 36 months  
RSUs | 2012 Stock Incentive Plan    
Share Based Compensation    
Vesting period 1 year 1 year
RSUs | 2012 Stock Incentive Plan | Board of Directors    
Share Based Compensation    
Restriction period 2 years  
RSUs | 2012 Stock Incentive Plan | Minimum    
Share Based Compensation    
Vesting period 12 months  
RSUs | 2012 Stock Incentive Plan | Maximum    
Share Based Compensation    
Vesting period 36 months