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Note 5 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Jun. 30, 2019
--- | --- | ---
Total assets |  | $ 58,520 | $ 65,147
Contingent consideration |  | 13,300 | 12,600
Derivative instruments - cash flow hedges |  | 13,116 | 12,458
Total liabilities |  | 26,416 | 25,058
Fair Value, Inputs, Level 1 [Member] |  |  |
Total assets |  | 58,520 | 65,147
Contingent consideration |  | 0 | 0
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |  |
Total assets |  | 0 | 0
Contingent consideration |  | 0 | 0
Derivative instruments - cash flow hedges |  | 13,116 | 12,458
Total liabilities |  | 13,116 | 12,458
Fair Value, Inputs, Level 3 [Member] |  |  |
Total assets |  | 0 | 0
Contingent consideration |  | 13,300 | 12,600
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 13,300 | 12,600
Equity Securities [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 27,819 | 38,219
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 27,819 | 38,219
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 0 | 0
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] | 30,701 | 26,928
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 30,701 | 26,928
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 September 30, 2019 and June 30, 2019 was $18.8 million
[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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