Stock-Based Compensation - Summary of Unrecognized Stock-based Compensation Expense Expected to be Amortized (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
2023	$ 3,150
2024	1,681
2025	873
2026	159
2027	5
Total unrecognized stock-based compensation expense	$ 5,868

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortization
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization next twelve months.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortizationNextTwelveMonths
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization remainder of fiscal year.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortizationRemainderOfFiscalYear
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization year four.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortizationYearFour
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization year three.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortizationYearThree
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Employee service share based compensation non vested awards total compensation cost not yet recognized share based awards other than options future amortization year two.

+ References

No definition available.

+ Details

Name:	lnsr_EmployeeServiceShareBasedCompensationNonVestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptionsFutureAmortizationYearTwo
Namespace Prefix:	lnsr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration