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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Income Tax Disclosure [Abstract]          
Income tax expense $ 7,021 $ 9,317 $ 28,131 $ 23,231  
Effective tax rate 10.50% 18.30% 15.10% 17.80%  
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 1,900   $ 1,900   $ 1,900
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense     $ 0   $ 0