v3.26.1

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
	Mar. 15, 2023	Sep. 30, 2025	Jul. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Mar. 26, 2024	Mar. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Change in fair value of warrant liabilities - (gain) loss			$ (700)	$ (4,263)	$ (13,156)
Reclassification of warrant liability to equity				$ 1,971
Conversion of AgeX-Serina Note						$ 10,721
Change in fair value, gain (loss)					$ (7,000)
Convertible Promissory Note
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt, face amount	$ 10,000						$ 10,000
Changes in fair value, loss	7,800
Juvenescence \| Convertible Note Purchase Agreement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt, face amount	$ 10,000
Debt, interest rate	7.00%
Contigent Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Reclassification of warrant liability to equity		$ 2,000

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Serina Therapeutics, Inc. 10-K