XML 106 R91.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Note 16 - Acquisition - Pro Forma Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Net Sales | $ 366,541 | $ 381,650
Gross Profit | 95,038 | 105,592
Operating Income | $ 6,857 | $ 18,010

X
- Definition The pro forma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period. + References No definition available. + Details
Name: | lyts_BusinessAcquisitionProFormaGrossProfit
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period. + References No definition available. + Details
Name: | lyts_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeTax
Namespace Prefix: | lyts_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration