The indicated per share dividend rate for a specific fiscal year.

No definition available.

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Namespace Prefix:	lyts_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	lyts_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The indicated per share quarterly cash dividend rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	lyts_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 405

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Note 9 - Cash Dividends (Details) - USD ($)	3 Months Ended
Note 9 - Cash Dividends (Details) - USD ($)	Sep. 30, 2015	Sep. 30, 2014	Oct. 31, 2015
Note 9 - Cash Dividends (Details) [Line Items]
Payments of Ordinary Dividends, Common Stock	$ 735,000	$ 1,447,000
Annual Indicated Per Share Dividend Rate (in Dollars per share)	$ 0.16
Subsequent Event [Member]
Note 9 - Cash Dividends (Details) [Line Items]
Quarterly Indicated Per Share Dividend Rate (in Dollars per share)			$ 0.04
Restricted Stock Units (RSUs) [Member]
Note 9 - Cash Dividends (Details) [Line Items]
Dividends	$ 2,160