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Note 5 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Mar. 31, 2021 | Jun. 30, 2020
--- | --- | ---
Total assets |  | $ 90,108 | $ 124,268
Contingent consideration |  | 12,170 | 6,137
Derivative instruments - cash flow hedges |  | 10,281 | 17,331
Total liabilities |  | 22,451 | 23,468
Fair Value, Inputs, Level 1 [Member] |  |  |
Total assets |  | 83,604 | 116,272
Contingent consideration |  | 0 | 0
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |  |
Total assets |  | 6,504 | 7,996
Contingent consideration |  | 0 | 0
Derivative instruments - cash flow hedges |  | 10,281 | 17,331
Total liabilities |  | 10,281 | 17,331
Fair Value, Inputs, Level 3 [Member] |  |  |
Total assets |  | 0 | 0
Contingent consideration |  | 12,170 | 6,137
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 12,170 | 6,137
Equity Securities [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 77,608 | 87,842
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 71,104 | 79,846
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 6,504 | 7,996
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 0 | 0
Certificates of Deposit [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 12,500 | 36,426
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 12,500 | 36,426
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 0 | 0
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | $ 0 | $ 0
[1] | Included in available-for-sale investments on the balance sheet. The cost basis in the Company's investment in ChemoCentryx Inc (CCXI) at March 31, 2021 was $6.6 million and on June 30, 2020 it was $6.6 million. The Company has a warrant to purchase additional CCXI equity shares which was valued at $6.5 million and $8.0 million as of March 31, 2021 and June 30 2020, respectively.
[2] | Included in available-for-sale investments on the balance sheet. The certificate of deposits have contractual maturity dates within one year.

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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 + Details
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