|
Equity Compensation (Details 4) (Stock options, USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Total stock-based compensation expense | |||
| Total stock-based compensation expense | $ 5,341,000 | $ 3,760,000 | $ 2,869,000 |
| Total unrecognized compensation cost related to non-vested stock option awards | 18,600,000 | ||
| Weighted-average period over which unrecognized compensation cost will be recognized | 3 years 1 month 6 days | ||
|
Cost of revenue
|
|||
| Total stock-based compensation expense | |||
| Total stock-based compensation expense | 105,000 | 63,000 | 78,000 |
|
Research and development
|
|||
| Total stock-based compensation expense | |||
| Total stock-based compensation expense | 2,235,000 | 1,414,000 | 704,000 |
|
Sales and marketing
|
|||
| Total stock-based compensation expense | |||
| Total stock-based compensation expense | 1,110,000 | 743,000 | 580,000 |
|
General and administrative
|
|||
| Total stock-based compensation expense | |||
| Total stock-based compensation expense | $ 1,891,000 | $ 1,540,000 | $ 1,507,000 |