XML 77 R65.htm IDEA: XBRL DOCUMENT
v3.25.1

License Agreements (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Oct. 03, 2023 | Jul. 31, 2023 | Dec. 31, 2015
--- | --- | --- | --- | ---
Impilo |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Investment owned (in shares) |  |  | 766,000 |
Sanford Burnham Prebys |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Shares held by third party (in shares) | 0 |  |  |
Sanford Burnham Prebys | Impilo |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Investment owned (in shares) |  | 191,500 |  |
Sanford Burnham Prebys | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Shares issued under license agreement (in shares) |  |  |  | 382,030
Annual license maintenance fee |  |  |  | $ 10
Annual license maintenance fee, year seven |  |  |  | 20
Potential milestone payments |  |  |  | $ 10,600
Royalties, net of sales |  |  |  | 4.00%
Sublicensing fee |  |  |  | 25.00%

X
- Definition Collaborative Arrangement, Rights and Obligations, Annual License Maintenance Fee + References No definition available. + Details
Name: | lsta_CollaborativeArrangementRightsAndObligationsAnnualLicenseMaintenanceFee
Namespace Prefix: | lsta_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Collaborative Arrangement, Rights and Obligations, Annual License Maintenance Fee Starting at Year Seven + References No definition available. + Details
Name: | lsta_CollaborativeArrangementRightsAndObligationsAnnualLicenseMaintenanceFeeStartingAtYearSeven
Namespace Prefix: | lsta_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Collaborative Arrangement, Rights and Obligations, Maximum Aggregate Milestone Payments, Per Product + References No definition available. + Details
Name: | lsta_CollaborativeArrangementRightsAndObligationsMaximumAggregateMilestonePaymentsPerProduct
Namespace Prefix: | lsta_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Collaborative Arrangement, Rights and Obligations, Royalties Net of Sales + References No definition available. + Details
Name: | lsta_CollaborativeArrangementRightsAndObligationsRoyaltiesNetOfSales
Namespace Prefix: | lsta_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Collaborative Arrangement, Rights and Obligations, Sublicensing Fees + References No definition available. + Details
Name: | lsta_CollaborativeArrangementRightsAndObligationsSublicensingFees
Namespace Prefix: | lsta_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Shares Held by Third Party + References No definition available. + Details
Name: | lsta_SharesHeldByThirdParty
Namespace Prefix: | lsta_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Shares Issued Under License Agreement + References No definition available. + Details
Name: | lsta_SharesIssuedUnderLicenseAgreement
Namespace Prefix: | lsta_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 + Details
Name: | us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of investment owned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-6 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477439/946-210-55-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478795/946-210-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 + Details
Name: | us-gaap_InvestmentOwnedBalanceShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=lsta_ImpiloMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=lsta_SanfordBurnhamPrebysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=us-gaap_CollaborativeArrangementTransactionWithPartyToCollaborativeArrangementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |