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Note 10 - Income Taxes (Details Textual) € in Millions | 12 Months Ended
--- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2015 EUR (€)
Deferred Tax Assets, Net of Valuation Allowance | $ 60,447,000 | $ 50,526,000 |  |
Deferred Tax Assets, Tax Credit Carryforwards | 6,386,000 | 3,197,000 |  |
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries | 68,900,000 |  |  |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount | 4,541,000 |  |  |
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Discrete Tax Items | 3,800,000 | 2,014 | 0 |
Income Tax Expense (Benefit) | $ 35,875,000 | $ 43,005,000 | 46,427,000 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% |  |  |
Change in Effective Income Tax Rate, Percentage | 2.80% | 0.90% |  |
Deferred Tax Assets, Valuation Allowance | $ 3,341,000 | $ 7,201,000 |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | (3,900,000) | 4,700,000 |  |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Operating Loss Carryforwards | 53,400,000 |  |  |
Tax Credit Carryforward, Amount | 3,700,000 |  |  |
State and Local Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards | 84,000,000 |  |  |
Tax Credit Carryforward, Amount | 2,700,000 |  |  |
Foreign Tax Authority [Member] |  |  |  |
Operating Loss Carryforwards | 4,100,000 |  |  |
Deferred Tax Assets, Investment [Member] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | 5,000,000 |  |
Deferred Tax Asset, Operating Loss Carry Forwards [Member] |  |  |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |  | (300,000) |  |
Operating Loss and Credit Carryforwards [Member] |  |  |  |
Deferred Tax Assets, Valuation Allowance | 2,700,000 | $ 2,000,000 |  |
Operating Loss Carryforwards [Member] |  |  |  |
Deferred Tax Assets, Net of Valuation Allowance | $ 21,200,000 |  |  |
R&D Europe [Member] |  |  |  |
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries | € |  |  |  | € 46.6
Income Tax Expense (Benefit) |  |  | $ 1,700,000 |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible discrete tax items. + References No definition available. + Details
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