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INCOME TAXES - Components of Income Before Income Taxes. Equity in Earnings and Extra Ordinary Items (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Domestic $ 18,012 $ (21,311) $ 5,455
Foreign (12,463) (22,462) (4,946)
Income (loss) before income taxes and equity in earnings $ 5,549 $ (43,773) $ 509