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Note 9 - Summary of Unvested Stock Options (Details) - $ / shares | 12 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2014
Unvested at June 30, 2015 (in shares) | 1,080,198 |  |
Unvested at June 30, 2015 (in dollars per share) | $ 2.99 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 1,026,800 | 734,323 | 436,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ 3.64 | $ 3.27 | $ 2.67
Vested (in shares) | (395,693) |  |
Vested (in dollars per share) | $ 2.95 |  |
Forfeited (in shares) | (47,800) |  |
Forfeited (in dollars per share) | $ 3.30 |  |
Unvested at June 30, 2016 (in shares) | 1,663,505 | 1,080,198 |
Unvested at June 30, 2016 (in dollars per share) | $ 3.39 | $ 2.99 |

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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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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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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