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Intangible Assets - Indefinite Lived (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]              
Indefinite lived intangible assets $ 205,100       $ 205,100   $ 205,100
Indefinite-lived intangible asset impairment 0   $ 0 $ 38,000 0 $ 38,000  
Houghton Combination [Member]              
Finite-Lived Intangible Assets [Line Items]              
Indefinite Lived Trademarks $ 204,000       $ 204,000   $ 204,000
Indefinite-lived intangible asset impairment   $ 38,000