XML 87 R72.htm IDEA: XBRL DOCUMENT v3.20.4
STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares authorized to be issued under the plan (in shares) 2,000,000  
Issuance of common stock, related expenses $ 4.4 $ 6.5
Restricted Stock Awards (RSAs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Period for recognition 1 year 7 months 9 days  
Unrecognized compensation cost $ 1.5  
Weighted average grant date fair value (in dollars per share) $ 51.41  
Performance-Based Restricted Stock Unit Awards (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Period for recognition 1 year 2 months 15 days  
Unrecognized compensation cost $ 1.8  
Expiration period of award 3 years  
Performance-Based Restricted Stock Unit Awards (RSUs) | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options vested on anniversary date 0.00%  
Performance-Based Restricted Stock Unit Awards (RSUs) | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options vested on anniversary date 200.00%  
Director | Restricted Stock Awards (RSAs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 12 months  
Period for recognition 12 months  
Officer | Restricted Stock Awards (RSAs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period 36 months  
Period for recognition 36 months