Name:	ikna_LesseeOperatingLeaseMaturityMonthAndYear
Namespace Prefix:	ikna_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Letter of credit to secure lease.

+ References

No definition available.

+ Details

Name:	ikna_LetterOfCreditToSecureLease
Namespace Prefix:	ikna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Operating lease monthly base rent.

+ References

No definition available.

+ Details

Name:	ikna_OperatingLeaseMonthlyBaseRent
Namespace Prefix:	ikna_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Operating lease term extended expiration period.

+ References

No definition available.

+ Details

Name:	ikna_OperatingLeaseTermExtendedExpirationPeriod
Namespace Prefix:	ikna_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage escalation in annual base rent.

+ References

No definition available.

+ Details

Name:	ikna_PercentageEscalationInAnnualBaseRent
Namespace Prefix:	ikna_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- 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

No definition available.

+ Details

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

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977

+ Details

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

Name:	us-gaap_OperatingLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

Name:	us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_StatementGeographicalAxis=ikna_BostonMassachusettsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Lease Obligation - Additional Information (Details) $ in Thousands		1 Months Ended	12 Months Ended
	Jul. 21, 2020 USD ($) ft²	Jul. 31, 2020	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2018 ft²
Lessee Lease Description [Line Items]
Total lease rent payments			$ 1,174	$ 964
Right-of-use asset			6,538	$ 170
Present value of lease liabilities			$ 6,987
Boston, Massachusetts
Lessee Lease Description [Line Items]
Area of leased property \| ft²	20,752
Lease commencement date	Feb. 19, 2021
Lease term	63 months
Lease rent free period	3 months
Monthly base rent	$ 145
Percentage escalation in annual base rent	3.00%
Total lease rent payments	$ 9,300
Letter of credit to secure lease	900
Right-of-use asset	7,500
Present value of lease liabilities	$ 7,500
Boston, Massachusetts \| Vertex Pharmaceuticals Inc.
Lessee Lease Description [Line Items]
Area of leased property \| ft²					13,170
Lease maturity					2020-12
Lease extended term period		2021-02