Note 3 - Available-for-sale Investments (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | |
|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
|
| Chemo Centryx, Inc. [Member] | ||
| Available-for-sale Securities, Gross Unrealized Loss | $ 0.9 | |
| Available-for-sale, Amortized Cost Basis, Price Per Share | $ 4.73 | |
| Chemo Centryx, Inc. [Member] | ||
| Share Price | $ 4.49 | |
| Available-for-sale Securities, Gross Unrealized Gain, Accumulated InInvestments | $ 0.9 | $ 22.8 |
| X | ||||||||||
- Definition Amount of accumulated pre-tax unrealized gain before deducting pre-tax unrealized losses on investments in available-for-sale securities impacting investments. No definition available.
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| X | ||||||||||
- Definition Represents the price per share of available-for-sale amortized cost basis. No definition available.
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| X | ||||||||||
- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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