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Business Segments (Details 1) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Cost of sales $ 5,726,000 $ 5,304,000 $ 17,959,000 $ 14,898,000
Net sales 14,180,000 12,053,000 43,812,000 33,202,000
Gross profit 8,454,000 6,749,000 25,853,000 18,304,000
Sales and marketing 5,223,000 4,626,000 14,629,000 13,108,000
Research and development 880,000 1,044,000 2,741,000 3,281,000
General and administrative 6,547,000 7,967,000 22,256,000 24,230,000
Operating expenses 12,650,000 13,637,000 39,626,000 40,744,000
Operating income (loss) (4,196,000) (6,888,000) (13,773,000) (22,440,000)
Other 0 0 0 125,000
Analytical Reference Standards and Services Segment [Member]        
Cost of sales 723,000 789,000 2,124,000 2,339,000
Net sales 766,000 1,089,000 2,209,000 3,159,000
Gross profit 43,000 300,000 85,000 820,000
Sales and marketing 158,000 130,000 420,000 432,000
Research and development 0 0 0 0
General and administrative 0 0 0 0
Operating expenses 158,000 130,000 420,000 432,000
Operating income (loss) (115,000) 170,000 (335,000) 388,000
Other   0   0
Consumer Products Segment [Member]        
Cost of sales 4,404,000 3,901,000 13,045,000 10,491,000
Net sales 11,904,000 9,725,000 34,768,000 25,923,000
Gross profit 7,500,000 5,824,000 21,723,000 15,432,000
Sales and marketing 5,018,000 4,451,000 14,170,000 12,440,000
Research and development 819,000 910,000 2,406,000 2,754,000
General and administrative 0 0 0 0
Operating expenses 5,837,000 5,361,000 16,576,000 15,194,000
Operating income (loss) 1,663,000 463,000 5,147,000 238,000
Other   0   0
Ingredients Segment [Member]        
Cost of sales 599,000 614,000 2,790,000 2,068,000
Net sales 1,510,000 1,239,000 6,835,000 4,120,000
Gross profit 911,000 625,000 4,045,000 2,052,000
Sales and marketing 47,000 45,000 39,000 236,000
Research and development 61,000 134,000 335,000 527,000
General and administrative 0 0 0 0
Operating expenses 108,000 179,000 374,000 763,000
Operating income (loss) 803,000 446,000 3,671,000 1,289,000
Other   0   0
Corporate and Other Segment [Member]        
Cost of sales 0 0 0 0
Net sales 0 0 0 0
Gross profit 0 0 0 0
Sales and marketing 0 0 0 0
Research and development 0 0 0 0
General and administrative 6,547,000 7,967,000 22,256,000 24,230,000
Operating expenses 6,547,000 7,967,000 22,256,000 24,355,000
Operating income (loss) $ (6,547,000) (7,967,000) $ (22,256,000) 24,355,000
Other   $ 0   $ 125,000