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SHARE-BASED COMPENSATION PLANS - Schedule of Employee Stock Purchase Plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]        
Shares purchased (in shares)   15,251    
Employee Stock Purchase Plan        
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]        
Shares purchased (in shares) 2,395 2,951 5,399 5,907
Weighted average price of shares purchased (in usd per share) $ 22.87 $ 22.61 $ 20.69 $ 23.04
Compensation expense recognized $ 5 $ 10 $ 8 $ 14
Tax benefits $ 1 $ 2 $ 2 $ 3