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Note 12 - Severance Costs (Tables) | 9 Months Ended
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Mar. 31, 2019
Employee Severance [Member] |
Notes Tables |
Schedule of Accrued Severance Liability [Table Text Block] |
|  | Nine |  |  | Nine |  |  | Fiscal |
|  | Months Ended |  |  | Months Ended |  |  | Year Ended |
(In thousands) |  | March 31, |  |  | March 31, |  |  | June 30, |
|  | 2019 |  |  | 2018 |  |  | 2018 |
Balance at beginning of the period |  | $ | 1,772 |  |  | $ | 235 |  |  | $ | 235 |
Accrual of expense |  |  | 534 |  |  |  | 91 |  |  |  | 1,900 |
Payments |  |  | (956 | ) |  |  | (312 | ) |  |  | (363 | )
Adjustments |  |  | -- |  |  |  | (14 | ) |  |  | -- |
Balance at end of the period |  | $ | 1,350 |  |  | $ | -- |  |  | $ | 1,772 |

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |