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Note 2 - Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Jun. 30, 2015
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Cash, FDIC Insured Amount | $ 250,000 |  |
Cash, Uninsured Amount | 30,014,000 |  | $ 28,494,000
Depreciation | 1,450,000 | $ 1,438,000 |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset | 0 |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | 0 |  |
Research and Development Expense | $ 1,311,000 | $ 1,851,000 |
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares (in Shares) | 693,000 | 386,000 |
Minimum [Member] |  |  |
Note 2 - 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 2 - 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 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Standard Warranty Term | 10 years |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 15 years |  |

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