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Note 6 - Stock Plans and Non-Qualified Option Agreement (Details) (USD $)
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Jun. 30, 2014
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Jun. 30, 2013
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| Note 6 - Stock Plans and Non-Qualified Option Agreement (Details) [Line Items] | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 9.85 | [1] | $ 10.23 | [2] | ||||
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Minimum [Member]
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| Note 6 - Stock Plans and Non-Qualified Option Agreement (Details) [Line Items] | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 2.79 | $ 5.50 | ||||||
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Maximum [Member]
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| Note 6 - Stock Plans and Non-Qualified Option Agreement (Details) [Line Items] | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 14.75 | $ 14.75 | ||||||
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