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Note 13 - Leases - Maturities of Lease Liability (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Jun. 30, 2022
--- | --- | ---
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year | $ 2,792 |
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year | 275 |
Lessee, Operating Sublease, Payment to be Received, Remainder of Fiscal Year | (377) |
Lessee, Net Lease Commitments, Liability, to be Paid, Reaminder of Fiscal Year | 3,444 |
Lessee, Operating Lease, Liability, to be Paid, Year One | 3,285 |
Finance Lease, Liability, to be Paid, Year One | 337 |
Lessee, Operating Sublease, Payment to be Received, Year One | (377) |
Lessee, Net Lease Commitments, Liability, to be Paid, Year One | 3,999 |
Lessee, Operating Lease, Liability, to be Paid, Year Two | 2,136 |
Finance Lease, Liability, to be Paid, Year Two | 362 |
Lessee, Operating Sublease, Payment to be Received, Year Two | (31) |
Lessee, Net Lease Commitments, Liability, to be Paid, Year Two | 2,529 |
Lessee, Operating Lease, Liability, to be Paid, Year Three | 835 |
Finance Lease, Liability, to be Paid, Year Three | 362 |
Lessee, Operating Sublease, Payment to be Received, Year Three | 0 |
Lessee, Net Lease Commitments, Liability, to be Paid, Year Three | 1,197 |
Lessee, Operating Lease, Liability, to be Paid, Year Four | 215 |
Finance Lease, Liability, to be Paid, Year Four | 303 |
Lessee, Operating Sublease, Payment to be Received, Year Four | 0 |
Lessee, Net Lease Commitments, Liability, to be Paid, Year Four | 518 |
Thereafter | 4 |
Thereafter | 0 |
Thereafter | 0 |
Thereafter | 4 |
Total lease payments | 9,267 |
Total lease payments | 1,639 |
Total lease payments | (785) |
Total lease payments | 11,691 |
Less: Interest | (699) |
Less: Interest | (185) |
Less: Interest | (884) |
Present Value of Lease Liabilities | 8,568 | $ 9,514
Present Value of Lease Liabilities | 1,454 | $ 1,521
Present Value of Lease Liabilities | $ 10,807 |

X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fourth fiscal year following current fiscal year. + References No definition available. + Details
Name: | lyts_FinanceLeaseLiabilityToBePaidAfterYearFour
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments. + References No definition available. + Details
Name: | lyts_LesseeNetLeaseCommitmentsLiabilityToBePaid
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | lyts_LesseeNetLeaseCommitmentsLiabilityToBePaidAfterYearFour
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in the current fiscal year. + References No definition available. + Details
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Namespace Prefix: | lyts_
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Namespace Prefix: | lyts_
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for net lease commitments. + References No definition available. + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. + References No definition available. + Details
Name: | lyts_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lease payment to be received for operating sublease after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | lyts_LesseeOperatingSubleasePaymentToBeReceivedAfterYearFour
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payment to be received for operating sublease during the remaining fiscal year. + References No definition available. + Details
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Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payment to be received for operating sublease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | lyts_LesseeOperatingSubleasePaymentToBeReceivedYearFour
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
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X
- Definition Amount of lease payment to be received for operating sublease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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X
- Definition Amount of lease payment to be received for operating sublease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Namespace Prefix: | lyts_
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Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payment to be received for operating sublease in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of lease payments to be received for operating sublease. + References No definition available. + Details
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Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from net lease commitments. + References No definition available. + Details
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Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
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X
- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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X
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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X
- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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