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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Deferred compensation arrangement with individual, shares authorized for issuance (in shares) 2,985,000    
Shares available to be issued under stock-based incentive plan (in shares) 804,855    
Options granted during the period (in shares) 0 0 0
Share-based compensation expense $ 6,241 $ 3,316 $ 2,261
Restricted stock weighted average period 1 year 3 months 4 days    
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Income tax benefit related to compensation expense $ 24 $ 248 $ 177
Employee Stock Option | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 10 years    
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding restricted shares (in shares) 161,746 277,815 279,727
Income tax benefit related to compensation expense $ 818 $ 698 $ 721
Deferred compensation expense 822    
Unearned compensation related to restricted stock $ 3,342 $ 4,489 $ 3,878
Restricted Stock | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Restricted Stock | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 1 year