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Property, Plant and Equipment - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Property Plant And Equipment [Abstract]        
Impairment losses of long-lived assets     $ 0  
Depreciation $ 3,000,000.0 $ 3,100,000 $ 6,000,000.0 $ 6,200,000