Consolidated Statements of Equity - USD ($)	At The Market Offering Agreement [Member] Common Stock [Member]	At The Market Offering Agreement [Member] Additional Paid-in Capital [Member]	At The Market Offering Agreement [Member]	Boyalife Asset Holding II [Member] Common Stock [Member]	Boyalife Asset Holding II [Member] Additional Paid-in Capital [Member]	Boyalife Asset Holding II [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	[1]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2019							2,843,601
Balance at Dec. 31, 2019							$ 3,000	$ 237,313,000	$ (236,932,000)	$ 2,000		$ 530,000	$ 916,000
Stock-based compensation expense								880,000					880,000
Issuance of common stock (in shares)			2,620,652				3,620,654
Issuance of common stock							$ 4,000	10,835,000					10,839,000
Foreign currency translation gain (loss)										14,000			14,000
Net loss									(16,351,000)			(460,000)	(16,811,000)
Exercise of pre-funded warrants (in shares)							324,445
Exercise of pre-funded warrants								32,000					32,000
Exercise of warrants (in shares)							275,137
Exercise of warrants								1,651,000					1,651,000
Discount due to beneficial conversion features								4,981,000					4,981,000
Conversion of note payable to common stock (in shares)				1,666,670			204,445
Conversion of related party note payable to common stock				$ 2,000	$ 2,998,000	$ 3,000,000		368,000					368,000
Balance (in shares) at Dec. 31, 2020							8,934,952
Balance at Dec. 31, 2020							$ 9,000	259,058,000	(253,283,000)	16,000		70,000	5,870,000
Stock-based compensation expense								2,560,000					2,560,000
Issuance of common stock (in shares)	2,976,832
Issuance of common stock	$ 3,000	$ 6,829,000	$ 6,832,000
Foreign currency translation gain (loss)										15,000			15,000
Net loss									(11,379,000)			(501,000)	(11,880,000)
Balance (in shares) at Dec. 31, 2021							11,911,784
Balance at Dec. 31, 2021							$ 12,000	$ 268,447,000	$ (264,662,000)	$ 31,000		$ (431,000)	$ 3,397,000

[1] Accumulated other comprehensive loss.