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Note 10 - Accrued Liabilities (Details Textual) | 6 Months Ended
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Jun. 30, 2019 USD ($)
Deferred Rent Credit | $ 2,013,169
Minimum [Member] |
Extended Product Warranty Term | 1 year
Maximum [Member] |
Extended Product Warranty Term | 2 years

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- Definition Represents term of extended product warranty. + References No definition available. + Details
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Namespace Prefix: | lrad_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707 + Details
Name: | us-gaap_DeferredRentCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |