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Note 9 - Cash Dividends (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Oct. 31, 2015
Note 9 - Cash Dividends (Details) [Line Items] |  |  |
Payments of Ordinary Dividends, Common Stock | $ 735,000 | $ 1,447,000 |
Annual Indicated Per Share Dividend Rate (in Dollars per share) | $ 0.16 |  |
Subsequent Event [Member] |  |  |
Note 9 - Cash Dividends (Details) [Line Items] |  |  |
Quarterly Indicated Per Share Dividend Rate (in Dollars per share) |  |  | $ 0.04
Restricted Stock Units (RSUs) [Member] |  |  |
Note 9 - Cash Dividends (Details) [Line Items] |  |  |
Dividends | $ 2,160 |  |

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