Geographic Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | $ 53,617 | $ 51,984 | $ 100,518 | $ 113,886 |
| United States | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | 47,341 | 45,290 | 88,685 | 101,311 |
| Americas, excluding U.S. | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | 785 | 724 | 1,485 | 1,303 |
| Europe, Middle East, India, Africa | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | 3,620 | 4,256 | 6,836 | 7,899 |
| Other | ||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
| Revenues | $ 1,871 | $ 1,714 | $ 3,512 | $ 3,373 |