XML 83 R63.htm IDEA: XBRL DOCUMENT v3.25.4

Out-Licensing Agreements (Details) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Aug. 31, 2022 USD ($) item	Feb. 28, 2022 USD ($) item agreement	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Collaborative agreements
Revenue					$ 677,564	$ 423,239	$ 270,259
License and collaboration revenue
Collaborative agreements
Revenue						6,210	37,083
Collaboration Agreements
Collaborative agreements
Upfront payments received		$ 22,000
Number of agreements entered into | agreement		2
Territory License - ARCALYST
Collaborative agreements
Upfront payments received		$ 12,000
Addition to transaction price						20,000
Number of performance obligations in an agreement | item		1
Term of agreement for royalty payments		12 years
Notice period to terminate the agreement		12 months
Time period threshold of continuous material development or commercialization activities in China that, if not met, can trigger the right for the Company to terminate the agreement		6 months
Notice period to terminate the agreement if there is no material development or commercialization activities with respect to the licensed product in China		60 days
Territory License - ARCALYST | Maximum
Collaborative agreements
Payments to be received by the company upon the achievement of specified development, regulatory and sales milestones					50,000
Territory License - ARCALYST | Non-current deferred revenue
Collaborative agreements
Transaction price					31,811
Territory License - ARCALYST | License and collaboration revenue
Collaborative agreements
Revenue					0	189	0
Territory License - Mavrilimumab
Collaborative agreements
Upfront payments received		$ 10,000
Transaction price		$ 10,000
Territory License - Mavrilimumab | License and collaboration revenue
Collaborative agreements
Revenue								$ 10,000
Worldwide License - Vixarelimab
Collaborative agreements
Upfront payments received	$ 80,000
Payments received upon delivery of certain materials							20,000
Milestone receipts						5,000	15,000
Addition to transaction price			$ 20,000	$ 20,000	5,000	10,000	25,000
Number of performance obligations in an agreement | item	4
Payments to be received by the company upon the achievement of specified development, regulatory and sales milestones					570,000
Worldwide License - Vixarelimab | Maximum
Collaborative agreements
Payments to be received by the company upon the achievement of specified development, regulatory and sales milestones	$ 600,000
Worldwide License - Vixarelimab | License and collaboration revenue
Collaborative agreements
Revenue					$ 0	5,261	$ 37,083
Revenue recognized related to performance obligations satisfied in prior periods						$ 4,989

X

- Definition

The additional amount of initial consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties.

+ References

No definition available.

+ Details

Name:	knsa_ContractWithCustomerAdditionToTransactionPrice
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of initial consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties.

+ References

No definition available.

+ Details

Name:	knsa_ContractWithCustomerTransactionPrice
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of revenue from payments received or receivable upon satisfaction of development, regulatory or sales-based milestones under the agreement.

+ References

No definition available.

+ Details

Name:	knsa_MilestonePaymentsReceivedOrReceivable
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The number of agreements to which the entity is a party.

+ References

No definition available.

+ Details

Name:	knsa_NumberOfAgreements
Namespace Prefix:	knsa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of performance obligations in an agreement.

+ References

No definition available.

+ Details

Name:	knsa_NumberOfPerformanceObligations
Namespace Prefix:	knsa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of payments received by the company upon the delivery of certain materials.

+ References

No definition available.

+ Details

Name:	knsa_PaymentReceivedDeliveryOfCertainMaterials
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of payments to be received by the company upon the achievement of specified development, regulatory and sales milestones.

+ References

No definition available.

+ Details

Name:	knsa_PotentialRevenueUponDevelopmentRegulatoryAndSalesMilestoneAchievement
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Term of the agreement before expiration.

+ References

No definition available.

+ Details

Name:	knsa_TermOfAgreement
Namespace Prefix:	knsa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The time period threshold of continuous material development or commercialization activities in China that, if not met, can trigger the right for the Company to terminate the agreement.

+ References

No definition available.

+ Details

Name:	knsa_TimePeriodThresholdOfContinuousMaterialDevelopmentOrCommercializationInChina.
Namespace Prefix:	knsa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The notice period upon which the Company can terminate the agreement in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	knsa_TimePeriodToTerminateAgreement
Namespace Prefix:	knsa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The notice period to terminate the agreement if there is no material development or commercialization activities with respect to the licensed product in China.

+ References

No definition available.

+ Details

Name:	knsa_TimePeriodToTerminateAgreementIfNoMaterialDevelopmentOrCommercializationInChina
Namespace Prefix:	knsa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of upfront payments received.

+ References

No definition available.

+ Details

Name:	knsa_UpfrontPaymentReceived
Namespace Prefix:	knsa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12A

+ Details

Name:	us-gaap_ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 8: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 9: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	srt_ProductOrServiceAxis=knsa_CollaborationMember
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:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=knsa_TerritoryLicenseArcalystMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementOfFinancialPositionLocationActivityAccrualAxis=knsa_NonCurrentDeferredRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=knsa_TerritoryLicenseMavrilimumabMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=knsa_WorldwideLicenseVixarelimabMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: