| Schedule of financial information by reportable segment | The following is financial information relating to the Company's reportable segments (in thousands):  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Quarter Ended  |  | Six Months Ended  |  
|  |  | December 31,  |  | December 31,  |  
|  |      | 2023 |      | 2022 |  | 2023 |      | 2022 |  
| Net sales: |   |  |    |  |  |  |  |  |    |  |  |  |  
| Protein Sciences |  | $ |  197,670 |    | $ |  203,887 |  | $ |  402,325 |    | $ |  403,836 |  
| Diagnostics and Genomics |  |   |  75,408 |  |   |  68,003 |  |   |  148,204 |  |   |  137,907 |  
| Intersegment |  |   |  (480) |  |   |  (309) |  |   |  (996) |  |   |  (507) |  
| Consolidated net sales |  | $ |  272,598 |    | $ |  271,581 |  | $ |  549,533 |    | $ |  541,236 |  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  
| Operating income: |  |   |    |  |   |    |  |   |    |  |   |    |  
| Protein Sciences |  | $ |  79,586 |    | $ |  89,336 |  | $ |  167,947 |    | $ |  175,278 |  
| Diagnostics and Genomics |  |   |  4,556 |  |   |  8,296 |  |   |  5,082 |  |   |  16,934 |  
| Segment operating income |  | $ |  84,142 |  | $ |  97,632 |  | $ |  173,029 |  | $ |  192,212 |  
| Costs recognized on sale of acquired inventory |  |   |  (183) |  |   |  (100) |  |   |  (364) |  |   |  (400) |  
| Amortization of intangibles |  |   |  (19,769) |  |   |  (19,125) |  |   |  (39,620) |  |   |  (38,408) |  
| Impact of partially-owned consolidated subsidiaries(1) |  |   |  — |  |   |  — |  |   |  — |  |   |  647 |  
| Acquisition related expenses and other |  |   |  525 |  |   |  8,307 |  |   |  1,114 |  |   |  8,010 |  
| Impairment of assets held-for-sale |  |  |  (6,038) |  |  |  — |  |  |  (6,038) |  |  |  — |  
| Stock based compensation, inclusive of employer taxes |  |   |  (12,958) |  |   |  (16,878) |  |   |  (24,453) |  |   |  (32,336) |  
| Restructuring and restructuring-related costs |  |   |  (5,518) |  |   |  (780) |  |   |  (5,607) |  |   |  (2,950) |  
| Corporate general, selling, and administrative expenses |  |   |  (2,197) |  |   |  (1,165) |  |   |  (4,195) |  |   |  (2,567) |  
| Consolidated operating income |  | $ |  38,004 |    | $ |  67,891 |  | $ |  93,866 |    | $ |  124,208 |   (1) Includes the quarterly results of the partially-owned consolidated subsidiary prior to the sale of this partially-owned consolidated subsidiary to a third party in the first fiscal quarter of 2023. |