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Note 1 - Management Statement (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Income Tax Expense (Benefit), Total | $ 3,928 | $ 2,874 | $ 28,599 | $ 10,311
Retained Earnings [Member] | Accounting Standards Update 2018-02 [Member] |  |  |  |
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent | $ 17,200 |  |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |
Income Tax Expense (Benefit), Total |  |  |  | $ (600)

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