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Goodwill - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2020
Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]    
Impairment of goodwill $ 14,200 $ 14,213 [1]
[1] The impairment as of September 30, 2020 is recorded on the income statement within impairment of goodwill.