Note 3 - Selected Balance Sheet Data - Changes in Carrying Amount of Goodwill (Details) $ in Thousands  | 
6 Months Ended | 
|---|---|
| 
 Dec. 31, 2018  
USD ($) 
 | |
| Beginning balance | $ 597,890 | 
| Acquisitions (Note 4) | 112,581 | 
| Currency translation | (4,116) | 
| Ending balance | 706,355 | 
| Protein Sciences [Member] | |
| Beginning balance | 347,918 | 
| Acquisitions (Note 4) | 13,554 | 
| Currency translation | (4,061) | 
| Ending balance | 357,411 | 
| Diagnostics and Genomics [Member] | |
| Beginning balance | 249,972 | 
| Acquisitions (Note 4) | 99,027 | 
| Currency translation | (55) | 
| Ending balance | $ 348,944 | 
| 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://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| 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 | ||||||||||
- Details 
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| X | ||||||||||
- Details 
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