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Subsequent Events (Details) - Subsequent Event [Member] - USD ($) | Apr. 20, 2024 | Apr. 03, 2024 | Apr. 30, 2024
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Subsequent Events (Details) [Line Items] |  |  |
Declared cash dividend |  | $ 5,000,000 |
Retention bonuses |  |  | $ 444,000
ARCA and Oruka |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Percentage of ownership interest |  | 97.62% |
ARCA |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Number of consecutive trading days |  | 5 days |
Adjusted exchange ratio |  | $ 5,000,000 |
ARCA | ARCA and Oruka |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Percentage of noncontrolling ownership interest |  | 2.38% |
ARCA | Common Stock |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Initially specified percentage for beneficial number of shares |  | 9.99% |
Oruka Therapeutics Inc | Common Stock and Pre Funded Warrants [Member] |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Aggregate purchase price |  | $ 275,000,000 |
Series B Preferred Stock |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Minimum percentage of originally issued outstanding |  | 30.00% |
Minimum percentage of originally issued outstanding |  | 30.00% |
Thomas A. Keuer and C. Jeffrey Dekker [Member] |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Retention bonuses | $ 165,000 |  |
Merger Agreement | ARCA and Oruka |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Payment of other party termination fee |  | $ 440,000 |
Merger Agreement | Minimum [Member] |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Subscription agreement receipt amount |  | $ 175,000,000 |
Merger Agreement | Series B Preferred Stock |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Preferred stock, par value (in Dollars per share) |  | $ 0.001 |
First Merger | Oruka Therapeutics Inc |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Excepted number of board members |  | 5 |
First Merger | Series B Preferred Stock | ARCA | Common Stock |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Preferred stock convertible shares issuable (in Shares) |  | 1,000 |
Seperation Agreement |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Number of months base salary |  | 12 months |
Cash payment |  | $ 25,000 |
Second Amendment of Certain Retention Bonus Letters | Thomas A. Keuer |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Increase of retention bonus to each executive | 200,000 |  |
Second Amendment of Certain Retention Bonus Letters | C. Jeffrey Dekker |  |  |
Subsequent Events (Details) [Line Items] |  |  |
Increase of retention bonus to each executive | $ 200,000 |  |

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