Net Loss Per Share of Common Stock - Schedule of Potentially Dilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Potentially dilutive securities excluded from computation of earnings per share | 3,898,219 | 1,262,849 | |
| Stock Options and Purchase Warrants [Member] | |||
| Potentially dilutive securities excluded from computation of earnings per share | 4,636,682 | 3,997,187 | |
| Senior Convertible Notes and Related Accrued Interest [Member] | |||
| Potentially dilutive securities excluded from computation of earnings per share | 122,717 | ||
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|