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Note 14 - Severance Costs (Tables) | 9 Months Ended
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Mar. 31, 2016
Employee Severance [Member] |
Notes Tables |
Schedule of Accrued Severance Liability [Table Text Block] |
(In thousands) |  | Nine Months Ended March 31, 2016 |  |  | Nine Months Ended March 31, 2015 |  |  | Fiscal Year Ended June 30, 2015 |
Balance at beginning of the period |  | $ | 379 |  |  | $ | -- |  |  | $ | -- |
Accrual of expense |  |  | 401 |  |  |  | 1,297 |  |  |  | 1,718 |
Payments |  |  | (544 | ) |  |  | (530 | ) |  |  | (704 | )
Adjustments |  |  | (67 | ) |  |  | (635 | ) |  |  | (635 | )
Balance at end of the period |  | $ | 169 |  |  | $ | 132 |  |  | $ | 379 |

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- Definition The tabular disclosure of the accrued severance liabilities. + References No definition available. + Details
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Namespace Prefix: | lyts_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |