Quarterly report pursuant to Section 13 or 15(d)

Property, Plant, and Equipment - Additional Information (Detail)

v3.20.2
Property, Plant, and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Property Plant And Equipment [Abstract]        
Depreciation and amortization expenses $ 0.1 $ 0.2 $ 0.5 $ 0.8