Segment Reporting - PPE (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Property and equipment, net of accumulated depreciation and amortization | $ 5,640 | $ 5,447 |
| Americas | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Property and equipment, net of accumulated depreciation and amortization | 5,423 | 4,938 |
| EMEA | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Property and equipment, net of accumulated depreciation and amortization | 166 | 408 |
| APAC | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Property and equipment, net of accumulated depreciation and amortization | $ 51 | $ 101 |