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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
INCOME TAXES        
Tax expense $ 3,265 $ 2,486 $ 7,581 $ 8,097
Effective tax rate (as a percent)     17.30% 22.70%
Federal statutory rate     21.00% 21.00%