Annual report pursuant to Section 13 and 15(d)

Note 10 - Income Taxes (Details Textual)

v3.7.0.1
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