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Note 3 - Segment Reporting Information (Details Textual) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2016
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk, Percentage | 0.00% | 0.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |
Concentration Risk, Percentage | 0.00% | 0.00% |
Reclassification of Operating Income from the Technology Segment to the Graphics Segment [Member] | First Quarter of Fiscal 2016 [Member] |  |  |
Prior Period Reclassification Adjustment | $ 73,000 |  |
Customer Relationships [Member] | Graphics Segment [Member] |  |  |
Intangible Assets, Net (Excluding Goodwill) | $ 505,000 |  |
Number of Operating Segments | 3 |  |
Intangible Assets, Net (Excluding Goodwill) | $ 5,479,000 |  | $ 5,586,000
Intersegment Revenue Markup Percentage | 10.00% |  |

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