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Note 15 - Leases (Details Textual) | 6 Months Ended
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Dec. 31, 2021
Minimum [Member] |
Lessee, Leases, Remaining Term (Year) | 1 year
Maximum [Member] |
Lessee, Leases, Remaining Term (Year) | 7 years

X
- Definition Remaining lease term of the lessee's leases. + References No definition available. + Details
Name: | lyts_LesseeLeasesRemainingTerm
Namespace Prefix: | lyts_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |