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Note 15 - Restructuring Costs (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2016
Inventory Write-down | $ 2,088,000 | $ 1,726,000 | $ 1,493,000 |  |  |
Gain (Loss) on Disposition of Property Plant Equipment | 1,361,000 |  | $ 343,000 |  |  |
Restructuring Charges | 1,419,000 |  |  |  |  |
Assets Held-for-sale, Not Part of Disposal Group, Current | 1,463,000 |  |  |  |  |
Machinery and Equipment at the Kansas City and Beaverton Facilities [Member] | Lighting Segment [Member] |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 322,000 |  |  |  |  |
Machinery and Equipment at the Kansas City and Beaverton Facilities [Member] | Technology Segment [Member] |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 32,000 |  |  |  |  |
Closure of Kansas City Facility [Member] |  |  |  |  |  |
Inventory Write-down | 485,000 |  |  |  |  |
Gain (Loss) on Disposition of Property Plant Equipment | 1,361,000 |  |  |  |  |
Restructuring and Related Cost, Expected Cost |  |  |  |  |  | $ 944,000
Closure of Kansas City Facility [Member] | Machinery and Equipment at the Kansas City and Beaverton Facilities [Member] |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 354,000 |  |  |  |  |
Consolidation of Beaverton, Oregon Facility into Other LSI Facilities [Member] |  |  |  |  |  |
Restructuring Charges | 377,000 |  |  |  |  |
Consolidated of Woodsocket, Rhode Island Manufacturing Operation into its North Canton, Ohio Operation [Member] |  |  |  |  |  |
Assets Held-for-sale, Not Part of Disposal Group, Current | 1,463,000 |  |  |  |  |
Consolidation of Woonsocket, Rhode Island Manufacturing Operation into Its North Canton, Ohio Operation [Member] |  |  |  |  |  |
Restructuring and Related Cost, Expected Cost |  |  |  |  |  | $ 500,000
Closure of Kansas City Facility and Consolidation of Beaverton, Oregon Facility Into Other LSI Facilities [Member] | Machinery and Equipment at the Kansas City and Beaverton Facilities [Member] |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 354,000 |  |  |  |  |

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- Definition Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 15 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=77912953&loc=d3e400-110220 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84241808&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66092785&loc=d3e4542-108314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093883-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093879-108312 + Details
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- Definition Amount expected to be recognized in earnings for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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