Goodwill and Intangible Assets (Amortization expense) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Amortization expense | ||||
| Amortization of intangible assets | $ 1,221 | $ 385 | $ 3,393 | $ 1,113 |
| Cost of revenue | ||||
| Amortization expense | ||||
| Amortization of intangible assets | 800 | 365 | 2,266 | 1,049 |
| Research and development | ||||
| Amortization expense | ||||
| Amortization of intangible assets | 50 | $ 20 | 140 | $ 64 |
| Sales and marketing | ||||
| Amortization expense | ||||
| Amortization of intangible assets | $ 371 | $ 987 | ||