Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Deficit (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member] Redeemable Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2022	$ 35,442	$ 22	$ 646	$ (38,446)	$ (37,778)
Balance, shares at Dec. 31, 2022	3,323	2,167
Stock-based compensation			2		2
Net income (loss)				1,658	1,658
Balance at Mar. 31, 2023	$ 35,442	$ 22	648	(36,788)	(36,118)
Balance, shares at Mar. 31, 2023	3,323	2,167
Balance at Dec. 31, 2023	$ 36,404	$ 25	858	(33,177)	(32,294)
Balance, shares at Dec. 31, 2023	3,438	2,410
Issuance of common stock upon exercise of stock options		$ 1	3		4
Issuance of common stock upon exercise of stock options, shares		64
Issuance of common stock upon conversion of preferred stock	$ (36,404)	$ 35	36,369		36,404
Issuance of common stock upon conversion of preferred stock, shares	(3,438)	3,438
Issuance of common stock upon conversion of AgeX-Serina Note		$ 6	10,715		10,721
Issuance of common stock upon conversion of note, shares		616
Cancellation of common stock upon consummation of Merger on March 26, 2024		$ (67)	(47,833)	37,179	(10,721)
Cancellation of common stock upon consummation of Merger, shares		(6,528)
Merger and issuance of common stock to Legacy Serina shareholders upon consummation of Merger on March 26, 2024		$ 1	960		961
Merger and issuance of common stock to Legacy Serina shareholders upon consummation of Merger, shares		8,414
Stock-based compensation			53		53
Net income (loss)				(9,437)	(9,437)
Balance at Mar. 31, 2024		$ 1	$ 1,125	$ (5,435)	$ (4,309)
Balance, shares at Mar. 31, 2024		8,414