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INCOME TAXES (Unrecognized Tax Benefits) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits (beginning balance) $ 12,676 $ 13,563 $ 13,174
Additions for tax positions of prior periods 1,497 581 88
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions (615) (2,184) (290)
Additions for tax positions related to the current year 2,041 936 1,036
Settlements (14) (220) (445)
Unrecognized tax benefits (ending balance) $ 15,585 $ 12,676 $ 13,563