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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Goodwill [Line Items]          
Goodwill and asset impairment $ 0   $ 0 $ 4,675 $ 8,554
Goodwill, Impairment Loss         5,254
Impairment of Intangible Assets (Excluding Goodwill)   $ 4,700   $ 4,675 $ 3,300