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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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]        
Shares purchased (in shares) 0 0 5,484 3,613
Weighted average price of shares purchased (in usd per share) $ 0 $ 0 $ 13.44 $ 16.91
Compensation expense recognized $ 0 $ 0 $ 33 $ 3