Geographic Information - Schedule of Property and Equipment, Net by Geographic Region (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Revenues From External Customers And Long Lived Assets [Line Items] | ||
| Property and equipment, net | $ 11,318 | $ 12,419 |
| United States | ||
| Revenues From External Customers And Long Lived Assets [Line Items] | ||
| Property and equipment, net | 10,602 | 12,108 |
| International | ||
| Revenues From External Customers And Long Lived Assets [Line Items] | ||
| Property and equipment, net | $ 716 | $ 311 |