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Note 8 - Shareholders' Equity (Details) - Stock retired and repurchased (USD $) | 12 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2011
Note 8 - Shareholders' Equity (Details) - Stock retired and repurchased [Line Items] |  |  |
Common shares repurchased | 0 | 79,293 | 204,286
Cost to repurchase common shares (in Dollars) |  | $ 1,350,000 | $ 5,377,000
Average price per share (in Dollars per share) | $ 0 | $ 17.02 | $ 13.65
Accrual Basis [Member] |  |  |
Note 8 - Shareholders' Equity (Details) - Stock retired and repurchased [Line Items] |  |  |
Cost to repurchase common shares (in Dollars) | $ 0 | $ 1,349,557 | $ 2,787,777

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- Definition Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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