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Note 14 - Share-Based Payments (Tables) | 9 Months Ended
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Sep. 30, 2012
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Three months ended September 30, 2012 |  |  | Three months ended September 30, 2011 |
|  | Number of Shares |  |  | Weighted Average exercise price per share |  |  | Number of Shares |  |  | Weighted Average exercise price per share |
Outstanding, beginning of period |  |  | 8,524,499 |  |  | $ | 0.62 |  |  |  | 8,237,124 |  |  | $ | 0.55 |
Granted |  |  | 220,000 |  |  |  | 1.38 |  |  |  | 706,000 |  |  |  | 0.74 |
Exercised |  |  | (20,187 | ) |  |  | 0.70 |  |  |  | (22,583 | ) |  |  | 0.47 |
Forfeited |  |  | (56,689 | ) |  |  | 0.83 |  |  |  | (24,875 | ) |  |  | 0.75 |
Expired |  |  | (3,000 | ) |  |  | 0.44 |  |  |  | — |  |  |  | — |
Outstanding, end of period |  |  | 8,664,623 |  |  | $ | 0.64 |  |  |  | 8,895,666 |  |  | $ | 0.54 |
Options exercisable, end of period |  |  | 7,160,766 |  |  | $ | 0.57 |  |  |  | 7,155,916 |  |  | $ | 0.54 |
|  | Nine months ended September 30, 2012 |  |  | Nine months ended September 30, 2011 |
|  | Number of Shares |  |  | Weighted Average exercise price per share |  |  | Number of Shares |  |  | Weighted Average exercise price per share |
Outstanding, beginning of period |  |  | 8,746,041 |  |  | $ | 0.57 |  |  |  | 8,272,249 |  |  | $ | 0.56 |
Granted |  |  | 769,000 |  |  |  | 1.36 |  |  |  | 706,000 |  |  |  | 0.74 |
Exercised |  |  | (693,340 | ) |  |  | 0.52 |  |  |  | (29,833 | ) |  |  | 0.47 |
Forfeited |  |  | (154,064 | ) |  |  | 0.80 |  |  |  | (52,750 | ) |  |  | 0.72 |
Expired |  |  | (3,014 | ) |  |  | 0.44 |  |  |  | — |  |  |  | — |
Outstanding, end of period |  |  | 8,664,623 |  |  | $ | 0.64 |  |  |  | 8,895,666 |  |  | $ | 0.54 |
Options exercisable, end of period |  |  | 7,160,766 |  |  | $ | 0.57 |  |  |  | 7,155,916 |  |  | $ | 0.54 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
|  |  |  |  |  | Options outstanding |  |  | Options exercisable |
Exercise price |  | Outstanding Number |  |  | Weighted average exercise price per share |  |  | Weighted Average remaining contractual life (years) |  |  | Aggregate intrinsic value |  |  | Number exercisable |  |  | Weighted average exercise price per share |  |  | Aggregate intrinsic value |
$ | 0.31 | - | $ | 0.48 |  |  | 3,133,074 |  |  | $ | 0.38 |  |  |  | 0.9 |  |  | $ | 2,834,818 |  |  |  | 3,133,074 |  |  | $ | 0.38 |  |  | $ | 2,834,818 |
$ | 0.56 | - | $ | 0.75 |  |  | 3,836,549 |  |  | $ | 0.66 |  |  |  | 3.6 |  |  |  | 2,392,655 |  |  |  | 2,868,692 |  |  | $ | 0.64 |  |  |  | 1,841,014 |
$ | 0.80 | - | $ | 1.38 |  |  | 1,695,000 |  |  | $ | 1.08 |  |  |  | 3.6 |  |  |  | 409,700 |  |  |  | 1,159,000 |  |  | $ | 0.95 |  |  |  | 399,350 |
|  |  |  |  |  |  | 8,664,623 |  |  | $ | 0.64 |  |  |  | 2.6 |  |  | $ | 5,637,173 |  |  |  | 7,160,766 |  |  | $ | 0.57 |  |  | $ | 5,075,182 |

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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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