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Note 15 - Earnings Per Share (Details Textual) - shares | 12 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Stock Options And Restricted Stock [Member] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 403,106 | 231,717 | 195,318
Performance Shares [Member] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 199,107 | 187,882 | 210,836

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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