Condensed Consolidated Statements of Equity (Unaudited) - 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]		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								67,000					67,000
Issuance of common stock (in shares)							1,050,748
Issuance of common stock							$ 1,000	3,220,000					3,221,000
Foreign currency translation gain (loss)										38,000			38,000
Net loss									(4,602,000)			(141,000)	(4,743,000)
Exercise of pre-funded warrants (in shares)							100,000
Exercise of pre-funded warrants								10,000					10,000
Exercise of warrants (in shares)							7,866
Exercise of warrants								47,000					47,000
Discount due to beneficial conversion features								1,869,000					1,869,000
Conversion of note payable to common stock (in shares)				1,666,670			100,000
Conversion of related party note payable to common stock				$ 2,000	$ 2,998,000	$ 3,000,000		180,000					180,000
Balance (in shares) at Mar. 31, 2020							5,768,885
Balance at Mar. 31, 2020							$ 6,000	245,704,000	(241,534,000)	40,000		389,000	4,605,000
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
Foreign currency translation gain (loss)													39,000
Balance (in shares) at Jun. 30, 2020							6,709,465
Balance at Jun. 30, 2020							$ 7,000	252,937,000	(247,971,000)	41,000		316,000	5,330,000
Balance (in shares) at Mar. 31, 2020							5,768,885
Balance at Mar. 31, 2020							$ 6,000	245,704,000	(241,534,000)	40,000		389,000	4,605,000
Stock-based compensation expense								314,000					314,000
Issuance of common stock (in shares)							344,419
Issuance of common stock								1,993,000					1,993,000
Foreign currency translation gain (loss)										1,000			1,000
Net loss									(6,437,000)			(73,000)	(6,510,000)
Exercise of pre-funded warrants (in shares)							224,445
Exercise of pre-funded warrants								22,000					22,000
Exercise of warrants (in shares)							267,271
Exercise of warrants								1,604,000					1,604,000
Discount due to beneficial conversion features								3,112,000					3,112,000
Conversion of note payable to common stock (in shares)							104,445
Conversion of related party note payable to common stock							$ 1,000	188,000					189,000
Balance (in shares) at Jun. 30, 2020							6,709,465
Balance at Jun. 30, 2020							$ 7,000	252,937,000	(247,971,000)	41,000		316,000	5,330,000
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	[1]	70,000	5,870,000
Stock-based compensation expense								258,000					258,000
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)										1,000	[1]		1,000
Net loss									(2,413,000)			(118,000)	(2,531,000)
Balance (in shares) at Mar. 31, 2021							11,911,784
Balance at Mar. 31, 2021							$ 12,000	266,145,000	(255,696,000)	17,000	[1]	(48,000)	10,430,000
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	[1]	70,000	5,870,000
Issuance of common stock (in shares)			2,976,832
Foreign currency translation gain (loss)													13,000
Balance (in shares) at Jun. 30, 2021							11,911,784
Balance at Jun. 30, 2021							$ 12,000	268,244,000	(260,235,000)	29,000	[1]	(181,000)	7,869,000
Balance (in shares) at Mar. 31, 2021							11,911,784
Balance at Mar. 31, 2021							$ 12,000	266,145,000	(255,696,000)	17,000	[1]	(48,000)	10,430,000
Stock-based compensation expense								2,099,000					2,099,000
Foreign currency translation gain (loss)										12,000			12,000
Net loss									(4,539,000)			(133,000)	(4,672,000)
Balance (in shares) at Jun. 30, 2021							11,911,784
Balance at Jun. 30, 2021							$ 12,000	$ 268,244,000	$ (260,235,000)	$ 29,000	[1]	$ (181,000)	$ 7,869,000

[1] Accumulated other comprehensive loss.