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SHARE-BASED COMPENSATION PLANS - Schedule of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]        
Shares purchased (in shares) 3,271 4,218 8,755 7,831
Weighted average price of shares purchased (in usd per share) $ 19.16 $ 13.08 $ 15.58 $ 14.85
Compensation expense recognized $ 15 $ 3 $ 48 $ 6