v3.26.1
Segments - Results of operations by Reporting Segment (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Information [Line Items]            
Product sales $ 2,675   $ 2,447   $ 4,990 $ 4,576
Revenue, Product and Service [Extensible Enumeration] Product [Member]   Product [Member]   Product [Member] Product [Member]
Operating expenses:            
Cost of sales $ 1,217   $ 927   $ 2,171 $ 1,919
General and administrative 1,062   905   2,184 1,797
Selling and marketing 276   286   549 559
Research and development 155   162   311 349
Total operating expenses 2,710   2,280   5,215 4,624
Income (loss) from operations (35)   167   (225) (48)
Total other expense, net (36)   (38)   (66) (79)
Net income (loss) (71) $ (220) 129 $ (256) (291) (127)
Additional Segment Information            
Interest expense (34)   (38)   (69) (79)
Depreciation and amortization 28   54   61 109
Share-based compensation expense 59   61   123 161
Therapeutic Market [Member]            
Operating expenses:            
General and administrative 602   567   1,204 1,121
Research and development 77   77   152 195
Total operating expenses 679   644   1,356 1,316
Income (loss) from operations (679)   (644)   (1,356) (1,316)
Additional Segment Information            
Interest expense (34)   (38)   (69) (79)
Depreciation and amortization 15   19   35 39
Share-based compensation expense 45   40   93 102
Biomedical Market [Member]            
Segment Reporting Information [Line Items]            
Product sales $ 2,524   $ 2,303   $ 4,694 $ 4,298
Revenue, Product and Service [Extensible Enumeration] Product [Member]   Product [Member]   Product [Member] Product [Member]
Operating expenses:            
Cost of sales $ 1,186   $ 928   $ 2,100 $ 1,809
General and administrative 350   213   760 425
Selling and marketing 182   188   362 364
Research and development 71   74   147 135
Total operating expenses 1,789   1,403   3,369 2,733
Income (loss) from operations 735   900   1,325 1,565
Additional Segment Information            
Depreciation and amortization 12   35   25 69
Share-based compensation expense 7   12   18 27
Anti-aging Market [Member]            
Segment Reporting Information [Line Items]            
Product sales $ 151   $ 144   $ 296 $ 278
Revenue, Product and Service [Extensible Enumeration] Product [Member]   Product [Member]   Product [Member] Product [Member]
Operating expenses:            
Cost of sales $ 31   $ (1)   $ 71 $ 110
General and administrative 110   125   220 251
Selling and marketing 94   98   187 195
Research and development 7   11   12 19
Total operating expenses 242   233   490 575
Income (loss) from operations (91)   (89)   (194) (297)
Additional Segment Information            
Depreciation and amortization 1       1 1
Share-based compensation expense $ 7   $ 9   $ 12 $ 32