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Commitments and Contingencies - Additional Information (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023
Commitments And Contingencies Disclosure [Line Items] |  |
Employee retention credit amount recognized | $ 0 | $ 0
Reduction of selling, general and administrative expenses | $ 1,368,000 |
Additional royalty payments rate | 3.00% |
Supply Agreement |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Purchase obligation | $ 4,767,000 |

X
- Definition Additional royalty payments percentage. + References No definition available. + Details
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Namespace Prefix: | lnsr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commitments and Contingencies Disclosure [Line Items] + References No definition available. + Details
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Namespace Prefix: | lnsr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Employee Retention Credit, CARES Act retention amount recognized. + References No definition available. + Details
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Namespace Prefix: | lnsr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reduction Of Selling, General And Administrative Expenses + References No definition available. + Details
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Namespace Prefix: | lnsr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=lnsr_SupplyAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |