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1. Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Advertising expense | $ 185 | $ 118
Outside the U.S. [Member] |  |
Tangible assets | $ 6,426 |

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- Definition Tangible assets + References No definition available. + Details
Name: | LTRX_TangibleAssets
Namespace Prefix: | LTRX_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_GeographicDistributionAxis=LTRX_OutsideUSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |