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Option Agreements (Details) - USD ($) $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 8 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Feb. 06, 2024 | Dec. 31, 2023 | Mar. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2024
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Initiation fee |  |  |  |  |  |  |  | $ 800
Development costs, percentage |  |  |  |  |  |  |  | 50.00%
Research and development expenses | [1] |  |  |  |  |  | $ 25,691 | $ 49,557
Accounts payable and other current liabilities |  |  |  |  |  |  | 3,800 | 3,800
Development costs |  |  |  |  | $ 3,300 |  |  |
Research initiation fee |  |  |  |  |  |  | 800 | 800
Expenses |  |  |  |  |  |  | 13,400 | 33,800
Clinical Development Milestones [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Non-refundable milestone payments |  |  |  | $ 12,000 |  | $ 12,000 |  |
Certain Regulatory Milestones [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Non-refundable milestone payments |  |  |  | $ 10,000 |  | $ 10,000 |  |
Related Party [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Accounts payable and other current liabilities |  |  |  |  |  |  | 2,300 | 2,300
Research and Development Expense [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Research and development expenses |  |  |  |  |  |  | 3,800 | 6,600
Research and Development Expense [Member] | ORKA-001 [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Milestone payment |  |  |  |  |  |  | 1,500 |
Research and Development Expenses [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Research and development expenses |  |  |  |  |  |  | $ 800 | $ 13,200
Forecast [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Percentage of warrant purchase |  | 1.00% |  |  |  |  |  |
Forecast [Member] | ORKA-002 [Member] |  |  |  |  |  |  |  |
Option Agreements [Line Items] |  |  |  |  |  |  |  |
Percentage of warrant purchase |  |  | 1.00% |  |  |  |  |
[1] | Includes related party amount of $13,537 for the three months ended September 30, 2024 and $33,967 for the period from February 6, 2024 (inception) to September 30, 2024

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