Description of Business and Summary of Significant Accounting Policies - Summary of Revenue Disaggregated by Segment, Product and Geography (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 7,176	$ 7,128
Biomedical Market [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 5,936	$ 5,594
% of Total Revenues	100.00%	100.00%
Biomedical Market [Member] | Cells [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,347	$ 1,227
% of Total Revenues	23.00%	22.00%
Biomedical Market [Member] | Media [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 4,589	$ 4,350
% of Total Revenues	77.00%	78.00%
Biomedical Market [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues		$ 17
Biomedical Market [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 4,736	4,758
Biomedical Market [Member] | U.S. [Member] | Cells [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	801	838
Biomedical Market [Member] | U.S. [Member] | Media [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	3,935	3,903
Biomedical Market [Member] | U.S. [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues		17
Biomedical Market [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	1,200	836
Biomedical Market [Member] | International [Member] | Cells [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	546	389
Biomedical Market [Member] | International [Member] | Media [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	654	447
Anti-Aging Skincare Market [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,240	$ 1,534
% of Total Revenues	100.00%	100.00%
Anti-Aging Skincare Market [Member] | Ecommerce [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 913	$ 1,050
% of Total Revenues	74.00%	68.00%
Anti-Aging Skincare Market [Member] | Professional [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 327	$ 484
% of Total Revenues	26.00%	32.00%