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Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Intangible assets          
Non-cash impairment charge, finite lived $ 3,500   $ 3,500    
Indefinite-lived intangible assets   $ 30,700   $ 27,200 $ 30,700
Intangible asset impairment       $ 3,500 $ 18,000
IPR&D          
Intangible assets          
Intangible asset impairment   $ 14,500