Inventories - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Inventory reserve and obsolescence charged to cost of goods | $ 315 | $ 286 | $ 2,024 | $ 809 |