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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
INCOME TAXES        
Tax expense $ 2,454 $ 3,015 $ 4,317 $ 5,611
Effective tax rate (as a percent)     16.80% 22.70%
Federal statutory rate     21.00% 21.00%