Note 3 - Selected Balance Sheet Data - Changes in Carrying Amount of Goodwill (Details) $ in Thousands  | 
9 Months Ended | 
|---|---|
| 
 Mar. 31, 2020  
USD ($) 
 | |
| Balance | $ 732,667 | 
| Acquisitions (Note 4) | 0 | 
| Prior year acquisitions/adjustments (Note 4) | (326) | 
| Currency translation | (6,510) | 
| Balance | 725,831 | 
| Protein Sciences [Member] | |
| Balance | 377,407 | 
| Acquisitions (Note 4) | 0 | 
| Prior year acquisitions/adjustments (Note 4) | (326) | 
| Currency translation | (6,424) | 
| Balance | 370,657 | 
| Diagnostics and Genomics [Member] | |
| Balance | 355,260 | 
| Acquisitions (Note 4) | 0 | 
| Prior year acquisitions/adjustments (Note 4) | 0 | 
| Currency translation | (86) | 
| Balance | $ 355,174 | 
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  | 
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Definition Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Details 
  | 
| X | ||||||||||
- Details 
  |