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LIABILITY RELATED TO SETTLEMENT ROYALTIES, WORKING CAPITAL FUND LIABILITY AND LIABILITY RELATED TO SALE OF FUTURE ROYALTIES - Liability Related to Sale of Future Royalties (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Feb. 25, 2021
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Other Liabilities Disclosure [Abstract] |  |  |
Current portion (included in accrued expenses and other current liabilities) | $ 2,048 | $ 2,039 |
Long-term portion | 51,549 | 52,066 | $ 44,800
Total liability related to sale of future royalties | $ 53,597 | $ 54,105 |

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- Definition Contractual Arrangement, Royalties Agreement, Liability, Noncurrent + References No definition available. + Details
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Namespace Prefix: | akba_
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