Segment Reporting - Reportable Revenues by Geographic Regions (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Segment Reporting Information [Line Items] | |||||||||||
| Net revenues | $ 10,859 | $ 12,475 | $ 10,735 | $ 6,562 | $ 6,648 | $ 7,151 | $ 7,129 | $ 7,216 | $ 40,631 | $ 28,144 | $ 27,306 |
| North America [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net revenues | 33,215 | 28,144 | 27,306 | ||||||||
| Europe, Middle East and Africa [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net revenues | 6,992 | 0 | 0 | ||||||||
| Latin America [Member] | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Net revenues | $ 424 | $ 0 | $ 0 | ||||||||