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SHARE-BASED COMPENSATION (Share-Based Compensation) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
SHARE-BASED COMPENSATION      
Net share-based compensation effect $ 1,513 $ 1,922 $ 2,565
Salaries and employee benefits      
SHARE-BASED COMPENSATION      
Net share-based compensation effect 3,266 3,094 4,181
Directors stock awards      
SHARE-BASED COMPENSATION      
Net share-based compensation effect 150 97 78
Income tax benefit      
SHARE-BASED COMPENSATION      
Net share-based compensation effect $ (1,903) $ (1,269) $ (1,694)