Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Summary of Revenue Disaggregated by Segment, Product and Geography (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 2,020	$ 1,658
Biomedical Market [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,771	$ 1,427
% of Total Revenues	100.00%	100.00%
Biomedical Market [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,550	$ 1,138
Biomedical Market [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	221	289
Biomedical Market [Member] | Cells [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 446	$ 323
% of Total Revenues	25.00%	23.00%
Biomedical Market [Member] | Cells [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 337	$ 165
Biomedical Market [Member] | Cells [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	109	158
Biomedical Market [Member] | Media [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,325	$ 1,104
% of Total Revenues	75.00%	77.00%
Biomedical Market [Member] | Media [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 1,213	$ 973
Biomedical Market [Member] | Media [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	112	131
Anti-Aging Skincare Market [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 249	$ 231
% of Total Revenues	100.00%	100.00%
Anti-Aging Skincare Market [Member] | Ecommerce [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues	$ 249	$ 166
% of Total Revenues	100.00%	72.00%
Anti-Aging Skincare Market [Member] | Professional [Member]
Disaggregation Of Revenue [Line Items]
Total Revenues		$ 65
% of Total Revenues		28.00%