Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Summary of Revenue Disaggregated by Segment, Product Group and Geography (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation Of Revenue [Line Items]
Total	$ 2,179	$ 1,973	$ 6,639	$ 5,900
Biomedical Market [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 2,000	$ 1,785	$ 6,043	$ 5,279
% of Total	100.00%	100.00%	100.00%	100.00%
Biomedical Market [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 1,663	$ 1,443	$ 5,087	$ 4,335
Biomedical Market [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total	337	342	956	944
Biomedical Market [Member] | Media [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 1,500	$ 1,355	$ 4,516	$ 3,604
% of Total	75.00%	76.00%	75.00%	68.00%
Biomedical Market [Member] | Media [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 1,299	$ 1,120	$ 3,984	$ 3,075
Biomedical Market [Member] | Media [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total	201	235	532	529
Biomedical Market [Member] | Cells [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 500	$ 430	$ 1,527	$ 1,675
% of Total	25.00%	24.00%	25.00%	32.00%
Biomedical Market [Member] | Cells [Member] | U.S. [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 364	$ 323	$ 1,103	$ 1,260
Biomedical Market [Member] | Cells [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Total	136	107	424	415
Anti-Aging Skincare Market [Member]
Disaggregation Of Revenue [Line Items]
Total	$ 179	$ 188	$ 596	$ 621