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Income Tax (Narrative) (Details) | 12 Months Ended
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Aug. 31, 2017 USD ($)
Income Tax 1 | $ 13,051,000

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- Definition Income Tax 1 + References No definition available. + Details
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Namespace Prefix: | lxrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration