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Loss per share - Narrative (Details) - shares | 12 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Stock options and awards |  |
Earnings per share [line items] |  |
Weighted average number of potential dilutive securities (in shares) | 10,515,666 | 7,934,988

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Instruments With Potential Future Dilutive Effect Not Included In Calculation Of Diluted Earnings Per Share + References No definition available. + Details
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Namespace Prefix: | lspd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | lspd_InstrumentsWithPotentialFutureDilutiveEffectNotIncludedInCalculationOfDilutedEarningsPerShareAxis=lspd_StockOptionsAndAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |