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Note 5 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Jun. 30, 2018
--- | --- | ---
Total Assets |  | $ 65,147 | $ 59,764
Business Combination, Contingent Consideration, Liability, Total |  | 12,600 |
Derivative instruments - cash flow hedges |  | 12,458 |
Total Liabilities |  | 25,058 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Total Assets |  | 65,147 | 59,764
Business Combination, Contingent Consideration, Liability, Total |  |  |
Derivative instruments - cash flow hedges |  |  |
Total Liabilities |  |  |
Fair Value, Inputs, Level 2 [Member] |  |  |
Total Assets |  |  |
Business Combination, Contingent Consideration, Liability, Total |  |  |
Derivative instruments - cash flow hedges |  | 12,458 |
Total Liabilities |  | 12,458 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Total Assets |  |  |
Business Combination, Contingent Consideration, Liability, Total |  | 12,600 |
Derivative instruments - cash flow hedges |  |  |
Total Liabilities |  | 12,600 |
Equity Securities [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 38,219 | 54,286
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 38,219 | 54,286
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [1] |  |
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure | [1] |  |
Certificates of Deposit [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 26,928 | 5,478
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 26,928 | 5,478
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [2] |  |
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure | [2] |  |
[1] | Included in available-for-sale investments on the balance sheet. The cost basis in the Company's investment in CCXI at June 30, 2019 and June 30, 2018 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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