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Note 4 - Business Segment Information (Details Textual) | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Number of Operating Segments | 2 |
Intersegment Revenue Markup Percentage | 10.00% |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |
Number of Major Customers | 0 | 0
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Number of Major Customers | 0 | 0

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- Definition The percentage of mark-up to intersegment revenue. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. + References No definition available. + Details
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Namespace Prefix: | lyts_
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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- Details
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- Details
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- Details
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