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Note 1 - Summary of Significant Accounting Policies (Details) - USD ($) | 12 Months Ended
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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 |  |

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