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Note 12 - Stock Incentive Plan (Tables) | 6 Months Ended
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Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Nonvested Share Activity [Table Text Block] |
|  | Non-vested Shares |  |  | Weighted average grant date fair value |
As of December 31, 2013 and as of June 30, 2014 |  |  | 21,034 |  |  | $ | 366.24 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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