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Note 3 - Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Weighted Average Exercise Price |  |  | # of shares |  |  | Weighted Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding, January 1, 2012 |  | $ | 4.40 |  |  |  | 115,600 |  |  |  |  |  |  |  |  |
Granted |  |  | 5.27 |  |  |  | 12,000 |  |  |  |  |  |  |  |  |
Cancelled |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | 2.72 |  |  |  | (2,000 | ) |  |  |  |  |  |  |  |
Outstanding, September 30, 2012 |  | $ | 4.51 |  |  |  | 125,600 |  |  |  | 4.93 |  |  | $ | 213,256 |
Exercisable, September 30, 2012 |  | $ | 4.51 |  |  |  | 125,600 |  |  |  | 4.93 |  |  | $ | 213,256 |
Outstanding, January 1, 2013 |  | $ | 4.53 |  |  |  | 121,600 |  |  |  |  |  |  |  |  |
Granted |  |  | 6.87 |  |  |  | 12,000 |  |  |  |  |  |  |  |  |
Cancelled |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | 4.23 |  |  |  | (49,000 | ) |  |  |  |  |  |  |  |
Outstanding, September 30, 2013 |  | $ | 5.04 |  |  |  | 84,600 |  |  |  | 7.22 |  |  | $ | 104,656 |
Exercisable, September 30, 2013 |  | $ | 5.04 |  |  |  | 84,600 |  |  |  | 7.22 |  |  | $ | 104,656 |
Schedule of Share-based Compensation, Activity [Table Text Block] |
|  | September 30, 2013 |  |  | September 30, 2012 |
Weighted average grant-date fair value of stock options granted |  | $ | 0.97 |  |  | $ | 0.83 |
Total fair value of stock options vested |  | $ | 11,686 |  |  | $ | 10,000 |
Total intrinsic value of stock options exercised |  | $ | 113,790 |  |  | $ | 3,077 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + 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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