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Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Intangible Assets Net Excluding Goodwill [Abstract]        
Impairment losses of intangible assets $ 0 $ 0 $ 0 $ 0
Amortization expense $ 1,000,000.0 $ 1,000,000.0 $ 2,100,000 $ 2,400,000