Revenue from Contracts with Customers - Schedule of Revenue Disaggregated by Geographic Segment (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | $ 81,362 | $ 121,845 |
| United States | ||
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | 56,879 | 99,845 |
| International | ||
| Disaggregation of Revenue [Line Items] | ||
| Total revenue | $ 24,483 | $ 22,000 |