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Note 6 - Goodwill and Other Intangible Assets (Details) - Goodwill - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2015 | Jun. 30, 2015 | Jun. 30, 2014
Goodwill [Line Items] |  |  |
Goodwill |  | $ 75,224 | $ 78,343
Accumulated impairment Losses |  | (64,716) | (67,835)
Net Goodwill |  | 10,508 | 10,508
LSI Saco [Member] |  |  |
Sale of LSI Saco |  |  |
Goodwill | $ (3,119) |  |
Accumulated impairment losses | 3,119 |  |
Lighting Segment [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  | 34,913 | 34,913
Accumulated impairment Losses |  | (34,778) | (34,778)
Net Goodwill |  | 135 | 135
Graphics Segment [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  | 28,690 | 28,690
Accumulated impairment Losses |  | (27,525) | (27,525)
Net Goodwill |  | 1,165 | 1,165
Technology Segment [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  | 11,621 | 11,621
Accumulated impairment Losses |  | (2,413) | (2,413)
Net Goodwill |  | $ 9,208 | 9,208
All Other Category [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | 3,119
Accumulated impairment Losses |  |  | (3,119)
Net Goodwill |  |  | $ 0
All Other Category [Member] | LSI Saco [Member] |  |  |
Sale of LSI Saco |  |  |
Goodwill | (3,119) |  |
Accumulated impairment losses | $ 3,119 |  |

X
- Definition The amount accumulated impairment losses that was eliminated due to the sale of a subsidiary. + References No definition available. + Details
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- Definition The amount of goodwill before accumulated impairment losses that was eliminated due to the sale of a subsidiary. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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