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Note 13 - Severance Costs (Tables) | 9 Months Ended
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Mar. 31, 2020
Employee Severance [Member] |
Notes Tables |
Schedule of Accrued Severance Liability [Table Text Block] |
|  | Nine Months |  |  | Nine Months |  |  | Fiscal Year |
|  | Ended |  |  | Ended |  |  | Ended |
|  | March 31, |  |  | March 31, |  |  | June 30, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2019 |
Balance at beginning of period |  | $ | 1,134 |  |  | $ | 1,772 |  |  | $ | 1,772 |
Accrual of expense |  |  | 73 |  |  |  | 534 |  |  |  | 560 |
Payments |  |  | (481 | ) |  |  | (956 | ) |  |  | (1,198 | )
Balance at end of period |  | $ | 726 |  |  | $ | 1,350 |  |  | $ | 1,134 |

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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
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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: |