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Business Segment Information - Summary of Operating Segment and Asset Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Segment Reporting Information [Line Items]          
Net revenues $ 53,917 $ 48,011 $ 170,106 $ 108,866  
Operating income (loss) (13,013) 4,385 (793) (13,062)  
Depreciation and amortization 3,335 2,451 8,479 6,880  
Capital expenditures 4,579 5,197 27,508 11,234  
Total assets 455,757   455,757   $ 454,472
Diagnostics [Member]          
Segment Reporting Information [Line Items]          
Net revenues 23,511 16,314 57,368 44,533  
Operating income (loss) (18,638) (9,951) (42,755) (31,116)  
Depreciation and amortization 1,136 934 2,965 2,448  
Capital expenditures 3,647 2,186 19,797 5,634  
Total assets 206,668   206,668   242,613
Molecular Solutions [Member]          
Segment Reporting Information [Line Items]          
Net revenues 30,406 31,697 112,738 64,333  
Operating income (loss) 5,625 14,336 41,962 18,054  
Depreciation and amortization 2,199 1,517 5,514 4,432  
Capital expenditures 932 $ 3,011 7,711 $ 5,600  
Total assets $ 249,089   $ 249,089   $ 211,859