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Note I - Treasury Stock (Details Textual) - USD ($) | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Mar. 28, 2017 | May 11, 2015 | Feb. 06, 2015 | Jun. 02, 2011
Stock Repurchase Program, Authorized Amount |  |  | $ 7,000,000 | $ 5,000,000 | $ 3,000,000 | $ 2,000,000
Treasury Stock, Shares, Acquired | 674 | 734 |  |  |  |
Treasury Stock Acquired, Average Cost Per Share | $ 9.65 | $ 10.70 |  |  |  |
Payments Related to Tax Withholding for Share-based Compensation | $ 6,000 |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 8,000 |  |  |  |
Excluding Restricted Stock Purchased [Member] |  |  |  |  |  |
Treasury Stock, Shares, Acquired | 0 | 0 |  |  |  |
2015 Increase [Member] |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  | $ 2,000,000 | $ 1,000,000 |
2017 Increase [Member] |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  | $ 2,000,000 |  |  |

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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