Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
|
| Smash Technologies LLC [Member] | ||||
| Related Party Transaction [Line Items] | ||||
| Product purchases | $ 0 | $ 74,000 | $ 82,000 | $ 272,000 |