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3. Supplemental Financial Information (Details Narrative) $ in Thousands	3 Months Ended
	Sep. 30, 2019 USD ($)
Supplemental Financial Information
Severance costs	$ 749

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- References

No definition available.

+ Details

Name:	LTRX_SeveranceCosts
Namespace Prefix:	LTRX_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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No definition available.

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Name:	LTRX_SupplementalFinancialInformationAbstract
Namespace Prefix:	LTRX_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration