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Note 5 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | ---
Total Assets | $ 70,647 |  | $ 59,764
Contingent Consideration | 6,000 |  |
Derivative Instruments - Cash Flow Hedges | 5,131 |  |
Total Liabilities | 11,131 |  |
Fair Value, Inputs, Level 1 [Member] |  |  |
Total Assets | 70,647 |  | 59,764
Contingent Consideration |  |  |
Derivative Instruments - Cash Flow Hedges |  |  |
Total Liabilities |  |  |
Fair Value, Inputs, Level 2 [Member] |  |  |
Total Assets |  |  |
Contingent Consideration |  |  |
Derivative Instruments - Cash Flow Hedges | 5,131 |  |
Total Liabilities | 5,131 |  |
Fair Value, Inputs, Level 3 [Member] |  |  |
Total Assets |  |  |
Contingent Consideration | 6,000 |  |
Derivative Instruments - Cash Flow Hedges |  |  |
Total Liabilities | 6,000 |  |
Equity Securities [Member] |  |  |
Investments, Fair Value Disclosure | 44,920 | [1] | 54,286
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | 44,920 | [1] | 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] |
Corporate Debt Securities [Member] |  |  |
Investments, Fair Value Disclosure | 25,727 | [2] | 5,478
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | 25,727 | [2] | 5,478
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure |  | [2] |
Corporate Debt Securities [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 December 31, 2018 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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