Quarterly report pursuant to Section 13 or 15(d)

Inventory - Additional Information (Detail)

v3.20.2
Inventory - Additional Information (Detail) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Inventory reduced by estimate for excess and obsolete amount $ 1.3 $ 1.3