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SHARE-BASED PAYMENTS - Schedule of Compensation Costs for Share-based Payment Arrangements (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Share-based compensation $ 3,771 $ 2,762 $ 3,525