Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Income Taxes (Details Textual)

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Note 3 - Income Taxes (Details Textual)
 3 Months Ended 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent 36.90% 36.70% 36.70% 36.40%