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Note 2 - Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
Options |  | Shares |  |  | Weighted Average Exercise Price Per Share |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2015 |  |  | 20,500 |  |  | $ | 23.00 |  |  |  |  |  |  |  |  |
Exercised |  |  | --- |  |  |  | --- |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | --- |  |  |  | --- |  |  |  |  |  |  |  |  |
Outstanding March 31, 2015 |  |  | 20,500 |  |  | $ | 23.00 |  |  |  | 0.61 |  |  | $ | 140 |
Exercisable at March 31, 2015 |  |  | 20,500 |  |  | $ | 23.00 |  |  |  | 0.61 |  |  | $ | 140 |
Options |  | Shares |  |  | Weighted Average Exercise Price Per Share |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2014 |  |  | 46,000 |  |  | $ | 23.96 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,500 | ) |  |  | 23.00 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (23,000 | ) |  |  | 24.93 |  |  |  |  |  |  |  |  |
Outstanding December 31, 2014 |  |  | 20,500 |  |  | $ | 23.00 |  |  |  | 0.85 |  |  | $ | 151 |
Exercisable at December 31, 2014 |  |  | 20,500 |  |  | $ | 23.00 |  |  |  | 0.85 |  |  | $ | 151 |

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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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