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Merger - Narrative (Details) - Old Cartesian - USD ($) $ in Millions			2 Months Ended	12 Months Ended
	Dec. 05, 2023	Nov. 13, 2023	Dec. 31, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Percentage acquired		100.00%
Revenues			$ 0.0
Net loss			$ 1.6
Transaction costs				$ 4.9
Common stock
Business Acquisition [Line Items]
Issuance of shares (in shares)	224,099	224,099
Preferred Stock
Business Acquisition [Line Items]
Issuance of shares (in shares)	384,930.724
Preferred Stock | Series A Preferred Stock
Business Acquisition [Line Items]
Issuance of shares (in shares)		384,930.724

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