Annual report pursuant to Section 13 and 15(d)

GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details)

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GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill [Line Items]      
Amortization of intangible assets $ 1,842 $ 1,856 $ 1,861
Specialty Waxes      
Goodwill [Line Items]      
Goodwill, Impairment Loss   $ 24,200