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Note 12 - Stockholders' Equity (Detail) - Warrants issued to purchase Common Stock that are outstanding:
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Dec. 31, 2012
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|---|---|
| Number of Warrants (in Shares) | 1,157,377 |
|
Rho [Member]
|
|
| Number of Warrants (in Shares) | 476,190 |
| Exercise Price Range (Per Share) | 1.05 |
| Expiration Dates | August 2019 |
|
Prentice [Member]
|
|
| Number of Warrants (in Shares) | 476,190 |
| Exercise Price Range (Per Share) | 1.05 |
| Expiration Dates | August 2019 |
|
Consultant [Member]
|
|
| Number of Warrants (in Shares) | 150,000 |
| Exercise Price Range (Per Share) | 2.28 |
| Expiration Dates | October 2021 |
|
Soros [Member] | Minimum [Member]
|
|
| Exercise Price Range (Per Share) | 5.10 |
|
Soros [Member] | Maximum [Member]
|
|
| Exercise Price Range (Per Share) | 7.80 |
|
Soros [Member]
|
|
| Number of Warrants (in Shares) | 34,086 |
| Expiration Dates | March 2013 |
|
Maverick [Member]
|
|
| Number of Warrants (in Shares) | 19,796 |
| Exercise Price Range (Per Share) | 5.10 |
| Expiration Dates | March 2013 |
|
Various Holders [Member] | Minimum [Member]
|
|
| Exercise Price Range (Per Share) | 5.10 |
|
Various Holders [Member] | Maximum [Member]
|
|
| Exercise Price Range (Per Share) | 7.80 |
|
Various Holders [Member]
|
|
| Number of Warrants (in Shares) | 1,115 |
| Expiration Dates | March 2013 |