Accrued Expenses and other payables (Schedule of Accrued Expenses) (Details) - USD ($) |
Sep. 30, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|---|---|---|---|
| Accrued Expenses and other payables [Abstract] | |||
| Compensation and related benefits | $ 92,233 | $ 519,092 | $ 356,588 |
| Patent fees | 35,000 | 40,000 | $ 40,000 |
| Deferred Rent | 54,957 | $ 51,155 | |
| Accrued professional services fees | 836,333 | ||
| Accrued clinical trial expense | 1,055,651 | $ 195,721 | $ 106,462 |
| Accrued expenses | $ 2,074,174 | $ 805,968 | $ 503,050 |