Stockholders' Equity (Details 5) - Common Stock Warrants [Member] - $ / shares |
3 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Mar. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] | |||||||
| Outstanding at beginning | 1,991,293 | 845,257 | 518,978 | ||||
| Issued | 1,208,845 | 327,060 | |||||
| Exercised | (15,625) | ||||||
| Terminated | (57,720) | (47,184) | (781) | ||||
| Outstanding at ending | 1,933,573 | 1,991,293 | 845,257 | ||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price [Roll Forward] | |||||||
| Outstanding at beginning | $ 13.00 | $ 25.67 | [1] | $ 32.13 | |||
| Issued | 6.23 | 18.12 | |||||
| Exercised | 5.00 | ||||||
| Terminated | 38.43 | 14.77 | 320.00 | ||||
| Outstanding at ending | $ 12.71 | $ 13.00 | $ 25.67 | [1] | |||
| |||||||
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the other than stock option plan. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the other than stock option plan. No definition available.
|
| X | ||||||||||
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to other than stock options that were terminated. No definition available.
|
| X | ||||||||||
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of other than options. No definition available.
|
| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. 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 The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|