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INCOME TAXES (Schedule of Income Before Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
United States operations $ 15,082 $ (38,359) $ (21,218)
Foreign operations 78,438 98,463 78,621
Income before income taxes $ 93,520 $ 60,104 $ 57,403