v2.4.0.6

Note 12 - Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] |
Risk-free interest rate |  |  | 2.42 | %
Expected life (in years) |  |  | 10.00 |
Dividend yield |  |  | 0.00 | %
Expected volatility |  |  | 93.20 | %
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
Party |  | Number of Warrants |  |  | Exercise Price Range (Per Share) |  | Expiration Dates
Rho |  |  | 476,190 |  |  |  |  | $1.05 |  |  | August 2019
Prentice |  |  | 476,190 |  |  |  |  | $1.05 |  |  | August 2019
Consultant |  |  | 150,000 |  |  |  |  | $2.28 |  |  | October 2021
Soros |  |  | 34,086 |  |  |  | $5.10 | – | $7.80 |  | March 2013
Maverick |  |  | 19,796 |  |  |  |  | $5.10 |  |  | March 2013
Various holders |  |  | 1,115 |  |  |  | $5.10 | – | $7.80 |  | March 2013
|  |  | 1,157,377 |  |  |  |  |  |  |  |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Number of Shares |  | Weighted Average Exercise Price (Per Share) |
Balance at December 31, 2009 |  |  | 207,760 |  |  |  | 9.09 |
Stock option awards granted |  |  | 1,904,348 |  |  |  | 2.40 |
Stock option awards cancelled |  |  | (21,000 | ) |  |  | 3.92 |
Stock option awards exercised |  |  | -- |  |  |  | -- |
Balance at December 31, 2010 |  |  | 2,091,108 |  |  |  | 3.05 |
Stock option awards granted |  |  | 1,109,134 |  |  |  | 2.42 |
Stock option awards cancelled |  |  | (385,915 | ) |  |  | 2.75 |
Stock option awards exercised |  |  | (17,645 | ) |  |  | 1.87 |
Stock option awards expired |  |  | (1,500 | ) |  |  | 15.83 |
Balance at December 31, 2011 |  |  | 2,795,182 |  |  |  | 2.84 |
Stock option awards granted |  |  | 2,072,260 |  |  |  | 1.36 |
Stock option awards cancelled |  |  | (633,911 | ) |  |  | 2.60 |
Stock option awards exercised |  |  | -- |  |  |  | -- |
Stock option awards expired |  |  | (27,650 | ) |  |  | 9.27 |
Balance at December 31, 2012 |  |  | 4,205,881 |  |  |  | 2.11 |
Vested at December 31, 2010 |  |  | 520,908 |  |  |  | 5.00 |
Vested at December 31, 2011 |  |  | 901,341 |  |  |  | 3.76 |
Vested at December 31, 2012 |  |  | 1,956,156 |  |  |  | 2.73 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|  | Options Outstanding |  | Options Exercisable |
Range of Exercise Prices |  | Options Outstanding |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price Per Share |  | Options Exercisable |  | Weighted Average Exercise Price Per Share |  | Weighted Average Remaining Contractual Life (years) |
$0.51 | – | $2.50 |  |  | 3,523,003 |  |  | 8.6 |  | $ | 1.80 |  |  |  | 1,613,976 |  |  | $ | 2.32 |  |  | 7.6 |
$2.51 | – | $5.00 |  |  | 615,628 |  |  | 7.6 |  |  | 2.78 |  |  |  | 274,930 |  |  |  | 2.89 |  |  | 7.0 |
$5.01 | – | $7.50 |  |  | -- |  |  | -- |  |  | -- |  |  |  | -- |  |  |  | -- |  |  | -- |
$7.51 | – | $10.00 |  |  | 6,750 |  |  | 3.5 |  |  | 8.71 |  |  |  | 6,750 |  |  |  | 8.71 |  |  | 3.5 |
$10.01 | – | $12.50 |  |  | 27,000 |  |  | 3.0 |  |  | 11.96 |  |  |  | 27,000 |  |  |  | 11.96 |  |  | 3.0 |
$12.51 | – | $15.50 |  |  | 33,500 |  |  | 2.3 |  |  | 12.84 |  |  |  | 33,500 |  |  |  | 12.84 |  |  | 2.3 |
$0.51 | – | $15.50 |  |  | 4,205,881 |  |  | 8.3 |  |  | 2.11 |  |  |  | 1,956,156 |  |  |  | 2.73 |  |  | 7.4 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
|  | 2012 |  | 2011 |  | 2010
Aggregate intrinsic value of outstanding options |  | $ | 76,000 |  |  | $ | 53,000 |  |  | $ | 935,000 |
Aggregate intrinsic value of options exercised |  |  | -- |  |  |  | 6,000 |  |  |  | -- |
Weighted average fair value per share of options granted |  |  | 0.91 |  |  |  | 1.77 |  |  |  | 2.28 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Risk-free interest rate |  |  | 0.87 | % |  |  | 1.88 | % |  |  | 2.39 | %
Expected life (in years) |  |  | 5.2 |  |  |  | 6.7 |  |  |  | 5.5 |
Dividend yield |  |  | 0.00 | % |  |  | 0.00 | % |  |  | 0.00 | %
Expected volatility |  |  | 81.02 | % |  |  | 82.42 | % |  |  | 84.07 | %
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  |  | Restricted Stock Awards |  | Weighted Average Grant Date Fair Value (per share) |  | Deferred Stock Unit Awards |  | Weighted Average Grant Date Fair Value (per share)
Balance at December 31, 2009 |  |  | 8,437 |  |  | $ | 0.92 |  |  |  | 12,314 |  |  | $ | 12.70 |
Shares / units granted |  |  | 8,062 |  |  |  | 2.25 |  |  |  | -- |  |  |  | -- |
Shares / units forfeited |  |  | (1,500 | ) |  |  | 1.49 |  |  |  | (51 | ) |  |  | 12.70 |
Shares / units restriction lapses |  |  | (7,687 | ) |  |  | 0.94 |  |  |  | (12,263 | ) |  |  | 12.70 |
Balance at December 31, 2010 |  |  | 7,312 |  |  |  | 2.25 |  |  |  | -- |  |  |  | -- |
Shares granted |  |  | -- |  |  |  | -- |  |  |  |  |  |  |  |  |
Shares forfeited |  |  | -- |  |  |  | -- |  |  |  |  |  |  |  |  |
Shares restriction lapses |  |  | (7,312 | ) |  |  | 2.25 |  |  |  |  |  |  |  |  |
Balance at December 31, 2011 |  |  | -- |  |  |  | -- |  |  |  |  |  |  |  |  |
Shares granted |  |  | 22,321 |  |  |  | 1.12 |  |  |  |  |  |  |  |  |
Shares forfeited |  |  | -- |  |  |  | -- |  |  |  |  |  |  |  |  |
Shares restriction lapses |  |  | -- |  |  |  | -- |  |  |  |  |  |  |  |  |
Balance at December 31, 2012 |  |  | 22,321 |  |  |  | 1.12 |  |  |  |  |  |  |  |  |
Aggregate grant date fair value |  | $ | 21,000 |  |  |  |  |  |  | $ | -- |  |  |  |  |
Vesting service period of shares granted |  |  | 1 year |  |  |  |  |  |  |  | 12 – 36 months |  |  |  |  |
Number of shares / units vested during December 31, 2010 |  |  | 7,687 |  |  |  |  |  |  |  | 12,263 |  |  |  |  |
Number of shares non-vested at December 31, 2010 |  |  | 7,312 |  |  |  |  |  |  |  | -- |  |  |  |  |
Number of shares vested during December 31, 2011 |  |  | 7,312 |  |  |  |  |  |  |  | -- |  |  |  |  |
Number of shares non-vested at December 31, 2011 |  |  | -- |  |  |  |  |  |  |  | -- |  |  |  |  |
Number of shares vested during December 31, 2012 |  |  | -- |  |  |  |  |  |  |  | -- |  |  |  |  |
Number of shares non-vested at December 31, 2012 |  |  | 22,321 |  |  |  |  |  |  |  | -- |  |  |  |  |

X
- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number D-98 -Paragraph 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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