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CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Stockholders' Equity Note [Abstract]      
Accumulated other comprehensive loss $ 45,998 $ 76,149  
Other comprehensive income (loss) 30,151 $ (4,214) $ (53,475)
Other comprehensive income, related income tax effects $ 2,500