Segment Information - Geographical Segment Revenue (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Total revenue | $ 6,497 | $ 6,180 | $ 12,686 | $ 11,840 |
Domestic [Member] | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Total revenue | 1,856 | 1,772 | 3,615 | 3,089 |
International [Member] | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Total revenue | $ 4,641 | $ 4,408 | $ 9,071 | $ 8,751 |