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Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Fair Value Disclosures [Abstract] |  |
Fair value, level 3 transfers out, amount | $ 0 | $ 0

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- Definition Fair value, level 3 transfers out, amount. + References No definition available. + Details
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Namespace Prefix: | ikna_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration