Stockholders' Equity (Deficit) (Summary of Outstandng Stock Options) (Details) - $ / shares |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2015 |
Dec. 31, 2014 |
|
| Options Outstanding | ||
| Balance | 1,018,590 | |
| Weighted average remaining contractual life | 7 years 9 months 22 days | |
| Weighted Average Exercise Price | $ 5.04 | |
| Options Exercisable | ||
| Balance | 649,421 | 473,696 |
| Weighted average remaining contractual life | 6 years 2 months 12 days | 5 years 11 months 26 days |
| Weighted average exercise price | $ 3.89 | $ 2.67 |
| Options Vested or Expected to Vest | ||
| Balance | 473,696 | |
| Weighted average remaining contractual life | 5 years 11 months 26 days | |
| Weighted average exercise price | $ 2.67 |