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v3.20.4

Common Shares and Warrants (Details) - $ / shares | 3 Months Ended
--- | ---
Nov. 30, 2020 | Nov. 30, 2019
Common Shares And Warrants [Roll Forward] |  |
Number of Warrants, Balance | 471,608 | 94,177
Weighted Average Exercise Price, Balance | $ 16.77 | $ 41.40
Number of Warrants, Cancelled/Expired | (32,510) | (25,000)
Weighted Average Exercise Price, Cancelled Expired | $ 67.50 | $ 44.90
Number of Warrants, Issued |  | 402,431
Weighted Average Exercise Price, Issued |  | $ 12.74
Number of Warrants, Balance | 439,098 |
Weighted Average Exercise Price, Balance | $ 14.68 |

X
- Definition Class of Warrant or Right, Expirations in Period + References No definition available. + Details
Name: | lxrp_ClassOfWarrantOrRightExpirationsInPeriod
Namespace Prefix: | lxrp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Grants in Period, Net of Forfeitures + References No definition available. + Details
Name: | lxrp_ClassOfWarrantOrRightGrantsInPeriod
Namespace Prefix: | lxrp_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Grants in Period, Weighted Average Exercise Price + References No definition available. + Details
Name: | lxrp_ClassOfWarrantOrRightGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | lxrp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Outstanding, Weighted Average Exercise Price, Beginning of Period + References No definition available. + Details
Name: | lxrp_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice
Namespace Prefix: | lxrp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | lxrp_CommonSharesAndWarrantsRollForward
Namespace Prefix: | lxrp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Expirations in Period, Weighted Average Exercise Price + References No definition available. + Details
Name: | lxrp_WeightedAverageExercisePriceCancelledExpired
Namespace Prefix: | lxrp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant