|
Warrants - Summary of Warrant Activity (Detail) (USD $)
|
3 Months Ended | 12 Months Ended |
|---|---|---|
|
Mar. 31, 2014
|
Dec. 31, 2013
|
|
| Equity [Abstract] | ||
| Warrants, Beginning balance | 2,747,094 | 3,235,982 |
| Warrants, Granted | ||
| Warrants, Exercised | (210,000) | (200,000) |
| Warrants, Expired | (288,888) | |
| Warrants, Ending balance | 2,537,094 | 2,747,094 |
| Weighted Average Price, Beginning balance | $ 1.91 | $ 3.53 |
| Weighted Average Price, Granted | ||
| Weighted Average Price, Exercised | $ 1.50 | $ 1.50 |
| Weighted Average Price, Expired | $ 19.87 | |
| Weighted Average Price, Ending balance | $ 1.94 | $ 1.91 |
| X | ||||||||||
|
- Definition
Number of warrants exercised in period. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average exercise price of warrants exercised in period. No definition available.
|
| X | ||||||||||
|
- Definition
Number of warrants expired in period. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average exercise price of warrants expired in period. No definition available.
|
| X | ||||||||||
|
- Definition
Number of warrants granted in period. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average exercise price of warrants granted in period. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average exercise price of warrants outstanding. No definition available.
|
| X | ||||||||||
|
- Definition
Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|