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Note 1 - Summary of Significant Accounting Policies (Details) - USD ($)
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Cash, FDIC Insured Amount $ 250,000    
Cash, Uninsured Amount 28,494,000 $ 12,367,000  
Depreciation 5,804,000 5,411,000 $ 4,702,000
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset 0    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability 0    
Defined Contribution Plan, Cost Recognized 1,880,000 1,961,000 1,932,000
Research and Development Expense 5,598,000 8,226,000 6,480,000
Advertising Expense $ 305,000 $ 322,000 $ 280,000
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares (in Shares) 451,000 462,000 356,000
Foreign Bank Accounts [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Cash, Uninsured Amount   $ 741,000  
Minimum [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Media Content Service Period 1 month    
Finite-Lived Intangible Asset, Useful Life 5 years    
Standard Warranty Term 1 year    
Maximum [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Media Content Service Period 1 year    
Finite-Lived Intangible Asset, Useful Life 20 years    
Standard Warranty Term 5 years    
Maximum [Member] | Product Warranty Exceptions [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Standard Warranty Term 10 years    
Maximum [Member] | Leasehold Improvements [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Property, Plant and Equipment, Useful Life 15 years