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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Tax Disclosure [Abstract]    
Effective tax rate (as a percent) 35.70% 3.50%
Impact of change in assertion of unremitted foreign earnings $ 500  
Impact of foreign earnings taxed at higher rates 400  
Valuation allowance activity 200 $ 300
Impairment of goodwill and other long-lived assets $ 0 61,109
Goodwill impairment   $ 48,700