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Note 16 - Related Party (Details) (Consulting Arrangement [Member], USD $) | 12 Months Ended
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Sep. 30, 2012
Consulting Arrangement [Member] |
Note 16 - Related Party (Details) [Line Items] |
Quarterly Consulting Fee for Consulting and Advisory Services | $ 5,000
Related Party Transaction, Expenses from Transactions with Related Party | $ 13,333

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- Details
Name: | lrad_Note16RelatedPartyDetailsLineItems
Namespace Prefix: | lrad_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Quarterly consulting fee for consulting and advisory services. + References No definition available. + Details
Name: | lrad_QuarterlyConsultingFeeForConsultingAndAdvisoryServices
Namespace Prefix: | lrad_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration