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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. + References No definition available. + Details
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X
- Definition Represents the price per share of available-for-sale amortized cost basis. + References No definition available. + Details
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X
- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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- Details
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- Details
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