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STOCK-BASED COMPENSATION PLANS (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares authorized to be issued under the plan (in shares) 2,000,000  
Compensation expense    
Recorded compensation costs for the RSAs and RSUs $ 6.5 $ 3.1
Restricted Stock Awards (RSAs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted (in shares) 36,691 47,273
Canceled (in shares) 17,134 19,742
Weighted average grant date fair value (in dollars per share) $ 52.83 $ 35.40
Restricted Stock Awards (RSAs) | Director    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   12 months
Restricted Stock Awards (RSAs) | Employees    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period   36 months
Performance-Based Restricted Stock Unit Awards (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expiration period of award 3 years  
Performance-Based Restricted Stock Unit Awards (RSUs) | Officer    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average grant date fair value (in dollars per share) $ 52.83 $ 35.40
Performance-Based Restricted Stock Unit Awards (RSUs) | Officer | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options vested on anniversary date (as a percent) 0.00%  
Performance-Based Restricted Stock Unit Awards (RSUs) | Officer | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options vested on anniversary date (as a percent) 200.00%  
Restricted Stock Unit Award (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted (in shares) 26,473 28,594
Canceled (in shares) 31,177 24,009
Shares issued (in shares) 62,726 48,753