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Note 5 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Jun. 30, 2021
--- | --- | ---
Business Combination, Contingent Consideration, Liability, Total |  | $ 9,000 |
Fair Value, Recurring [Member] |  |  |
Derivative instruments – cash flow hedges |  | 2,254 | $ 275
Total assets |  | 69,389 | 32,738
Business Combination, Contingent Consideration, Liability, Total |  | 9,000 | 29,400
Derivative instruments - cash flow hedges |  | 4,382 | 8,376
Total liabilities |  | 13,382 | 37,776
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Derivative instruments – cash flow hedges |  | 0 | 0
Total assets |  | 64,025 | 31,081
Business Combination, Contingent Consideration, Liability, Total |  | 0 | 0
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Derivative instruments – cash flow hedges |  | 2,254 | 275
Total assets |  | 5,364 | 1,657
Business Combination, Contingent Consideration, Liability, Total |  | 0 | 0
Derivative instruments - cash flow hedges |  | 4,382 | 8,376
Total liabilities |  | 4,382 | 8,376
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Derivative instruments – cash flow hedges |  | 0 | 0
Total assets |  | 0 | 0
Business Combination, Contingent Consideration, Liability, Total |  | 9,000 | 29,400
Derivative instruments - cash flow hedges |  | 0 | 0
Total liabilities |  | 9,000 | 29,400
Equity Securities [Member] | Fair Value, Recurring [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 53,635 | 19,963
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 50,525 | 18,581
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 3,110 | 1,382
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Investments, Fair Value Disclosure | [1] | 0 | 0
Certificates of Deposit [Member] | Fair Value, Recurring [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 13,500 | 12,500
Certificates of Deposit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 13,500 | 12,500
Certificates of Deposit [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Investments, Fair Value Disclosure | [2] | 0 | 0
Certificates of Deposit [Member] | Fair Value, Recurring [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) was $6.6 million at both December 31, 2021 and June 30, 2021. The Company has a warrant to purchase additional CCXI equity shares which was valued at $3.1 million and $1.4 million as of December 31, 2021 and June 30, 2021, respectively.
[2] | Included in available-for-sale investments on the balance sheet. The certificates of deposit have contractual maturity dates within one year.

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