Stock-Based Compensation (Schedule of Warrant Activity) (Details) - Warrant [Member] - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Number of Warrants | ||
| Outstanding - December 31, 2015 | 45,314 | |
| Granted | 468,750 | |
| Exercised | (343,750) | |
| Forfeited/Canceled/Expired | ||
| Outstanding - December 31, 2016 | 170,314 | 45,314 |
| Exercisable - December 31, 2016 | 170,314 | |
| Weighted Average Exercise Price | ||
| Outstanding - December 31, 2015 | $ 66.72 | |
| Granted | 6.80 | |
| Exercised | 2.00 | |
| Forfeited/Canceled/Expired | ||
| Outstanding - December 31, 2016 | 32.44 | $ 66.72 |
| Exercisable - December 31, 2016 | $ 32.44 | |
| Weighted Average Remaining Contractual Life (in Years) | ||
| Outstanding | 4 years 3 months 18 days | 3 years 6 months |
| Exercisable - December 31, 2016 | 4 years 3 months 18 days | |
| Aggregate Intrinsic Value | ||
| Outstanding - December 31, 2015 | ||
| Outstanding - December 31, 2016 | ||
| Exercisable - December 31, 2016 | ||