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Note 11 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Operating Loss Carryforwards, Expiration Term (Year) 5 years      
Deferred Tax Liabilities, Previously Undistributed Foreign Earnings $ 1,000      
Effective Income Tax Rate Reconciliation, Mix of Income in Various Jurisdictions 4,300 $ 5,100 $ 1,400  
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount 2,200 800 1,200  
Effective Income Tax Rate Reconciliation, Return-to-accrual Adjustments to True-up Up Prior-period Provision Amounts 1,300      
Effective Income Tax Rate Reconciliation, Release of Uncertain Tax Provision Reserves 1,000 1,700 700  
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount   1,200    
Effective Income Tax Rate Reconciliation, GILTI     800  
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount 100      
Unrecognized Tax Benefits, Ending Balance 9,559 9,412 $ 9,286 $ 11,251
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 9,600      
Unrecognized Tax Benefits, Interest on Income Taxes Accrued 1,100 800    
State and Local Jurisdiction [Member]        
Operating Loss Carryforwards 76,800      
Tax Credit Carryforward, Amount 4,400      
Foreign Tax Authority [Member]        
Operating Loss Carryforwards 4,600      
Operating Loss Carryforwards, Subject to Expiration 3,700      
Operating Loss Carryforwards, Not Subject to Expiration $ 900      
Tax Year 2019 [Member]        
Income Tax Expense (Benefit), CARES Act   (200)    
Tax Year 2020 [Member]        
Income Tax Expense (Benefit), CARES Act   (800)    
Tax Years 2019 and 2020 [Member]        
Income Tax Expense (Benefit), CARES Act   $ (1,000)