Warrants - Summary of Warrant Activity and Related Information (Details) - $ / shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Weighted Average Exercise Price | ||
| Outstanding at January 1 (in dollars per share) | $ 4.57 | $ 4.57 |
| Granted (in dollars per share) | 2.43 | 0 |
| Exercised (in dollars per share) | 0 | 3.48 |
| Forfeited/Expired (in dollars per share) | 6.25 | 0 |
| Outstanding at December 31 (in dollars per share) | $ 2.79 | $ 4.57 |
| Warrants (Member) | ||
| Warrants | ||
| Outstanding at January 1 (in shares) | 1,398,653 | 1,408,002 |
| Granted (in shares) | 6,166,426 | 0 |
| Exercised (in shares) | 0 | (9,349) |
| Forfeited/Expired (in shares) | (84,000) | 0 |
| Outstanding at December 31 (in shares) | 7,481,079 | 1,398,653 |
| X | ||||||||||
- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|