Business Segments - Segment Financial Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) reportable_segment	Sep. 30, 2022 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | reportable_segment			3
Segment Reporting Information [Line Items]
Net sales	$ 19,495	$ 17,063	$ 62,374	$ 51,054
Cost of sales	7,526	6,856	24,531	20,273
Gross profit (loss)	11,969	10,207	37,843	30,781
Operating expenses:
Sales and marketing	6,035	5,868	19,918	22,126
Research and development	1,241	1,224	3,799	3,547
General and administrative	5,840	6,180	19,557	22,292
Total operating expenses	13,116	13,272	43,274	47,965
Operating income (loss)	(1,147)	(3,065)	(5,431)	(17,184)
Consumer Products segment
Segment Reporting Information [Line Items]
Net sales	17,400	14,561	51,924	44,018
Ingredients segment
Segment Reporting Information [Line Items]
Net sales	1,424	1,819	8,252	4,710
Analytical Reference Standards and Services segment
Segment Reporting Information [Line Items]
Net sales	671	683	2,198	2,326
Operating Segments | Consumer Products segment
Segment Reporting Information [Line Items]
Net sales	17,400	14,561	51,924	44,018
Cost of sales	6,024	5,224	18,387	15,694
Gross profit (loss)	11,376	9,337	33,537	28,324
Operating expenses:
Sales and marketing	5,934	5,696	19,599	21,634
Research and development	1,142	1,089	3,278	3,204
General and administrative	0	0	0	0
Total operating expenses	7,076	6,785	22,877	24,838
Operating income (loss)	4,300	2,552	10,660	3,486
Operating Segments | Ingredients segment
Segment Reporting Information [Line Items]
Net sales	1,424	1,819	8,252	4,710
Cost of sales	739	899	3,852	2,302
Gross profit (loss)	685	920	4,400	2,408
Operating expenses:
Sales and marketing	0	12	37	36
Research and development	99	135	521	343
General and administrative	0	0	0	0
Total operating expenses	99	147	558	379
Operating income (loss)	586	773	3,842	2,029
Operating Segments | Analytical Reference Standards and Services segment
Segment Reporting Information [Line Items]
Net sales	671	683	2,198	2,326
Cost of sales	763	733	2,292	2,277
Gross profit (loss)	(92)	(50)	(94)	49
Operating expenses:
Sales and marketing	101	160	282	456
Research and development	0	0	0	0
General and administrative	0	0	0	0
Total operating expenses	101	160	282	456
Operating income (loss)	(193)	(210)	(376)	(407)
Corporate and other
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit (loss)	0	0	0	0
Operating expenses:
Sales and marketing	0	0	0	0
Research and development	0	0	0	0
General and administrative	5,840	6,180	19,557	22,292
Total operating expenses	5,840	6,180	19,557	22,292
Operating income (loss)	$ (5,840)	$ (6,180)	$ (19,557)	$ (22,292)