| Note 12 - Segment Information (Details Textual) | 12 Months Ended | ||
|---|---|---|---|
| Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | |
| Number of Reportable Segments | 2 | ||
| Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member] | Protein Sciences [Member] | |||
| Number of Major Customers | 0 | 0 | 0 | 
| Customer Concentration Risk [Member] | Revenue, Segment Benchmark [Member] | Diagnostics and Genomics [Member] | |||
| Number of Major Customers | 0 | 0 | 0 | 
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- Definition Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. No definition available. 
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Details 
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- Details 
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- Details 
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