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Note 4 - Stockholders' Equity (Details) - Stock Options Activity (Parentheticals) (USD $) | 3 Months Ended
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Mar. 31, 2014
Stock Options Activity [Abstract] |
Granted, weighted average fair value | $ 7.75

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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