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Note 2 - Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Mar. 31, 2019
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
( In thousands) |  | March 31, 2019 |  |  | March 31, 2019 |
|  | Lighting Segment |  |  | Graphics Segment |  |  | Lighting Segment |  |  | Graphics Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 46,364 |  |  | $ | 10,339 |  |  | $ | 157,931 |  |  | $ | 42,790 |
Products and services transferred over time |  |  | 6,421 |  |  |  | 9,708 |  |  |  | 19,940 |  |  |  | 26,669 |
|  | $ | 52,785 |  |  | $ | 20,047 |  |  | $ | 177,871 |  |  | $ | 69,459 |
Type of Product and Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current technology products |  | $ | 46,195 |  |  | $ | 4,427 |  |  | $ | 153,771 |  |  | $ | 9,178 |
Legacy products |  |  | 6,133 |  |  |  | 11,160 |  |  |  | 22,156 |  |  |  | 45,346 |
Turnkey services and other |  |  | 457 |  |  |  | 4,460 |  |  |  | 1,944 |  |  |  | 14,935 |
|  | $ | 52,785 |  |  | $ | 20,047 |  |  | $ | 177,871 |  |  | $ | 69,459 |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] |
( In thousands) |  | Balance as of June 30, 2018 |  |  | Adjustments |  |  | Opening Balance as of July 1, 2018 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 50,609 |  |  | $ | 4,935 |  |  | $ | 55,544 |
Inventories, net |  | $ | 50,994 |  |  | $ | (4,167 | ) |  | $ | 46,827 |
Other long-term assets, net |  | $ | 9,786 |  |  | $ | (177 | ) |  | $ | 9,609 |
Shareholders' Equity: |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  | $ | 15,124 |  |  | $ | 591 |  |  | $ | 15,715 |

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