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Note 3 - Supplemental Balance Sheet and Cash Flow Information (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Available-for-sale Securities, Total | $ 59,800 | $ 59,800 | $ 66,100 |
Amortization of Intangible Assets, Total |  | 47,076 | 44,393 | $ 29,395
Other Assets, Noncurrent, Total | 5,266 | 5,266 | 44,002 |
Cost Method Investments | 2,606 | $ 2,606 | 40,385 |
Astute Medical, Inc. [Member] |  |  |  |
Payments to Acquire Investments, Total | $ 22,500 |  |  |
Astute Medical, Inc. [Member] |  |  |  |
Percentage of Ownership Interests | 16.40% | 16.40% |  |
Asset Impairment Charges, Total |  | $ 16,200 |  |
Cost Method Investments | $ 1,300 | 1,300 |  |
Developed Technology Rights [Member] | Cost of Sales [Member] |  |  |  |
Amortization of Intangible Assets, Total |  | 25,300 | 23,100 | 11,100
Trade Names, Customer Relationships, Non-Compete Agreements, and Patents [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |
Amortization of Intangible Assets, Total |  | $ 21,600 | $ 21,300 | $ 18,300
ChemoCentryx, Inc (CCXI) [Member] |  |  |  |
Share Price | $ 13.17 | $ 13.17 | $ 9.36 |
Advanced Cell Diagnostics (ACD) [Member] | Available-for-sale Securities [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities | $ 2,100 | $ 2,100 |  |
ChemoCentryx, Inc (CCXI) [Member] |  |  |  |
Proceeds from Sale of Available-for-sale Securities, Total | $ 26,900 |  |  |
Share Price | $ 13.17 | $ 13.17 |  |
Available-for-sale Securities, Gross Realized Gain (Loss), Total |  | $ 15,700 |  |
Available-for-sale Equity Securities, Amortized Cost Basis, Total | $ 18,800 | 18,800 | $ 29,500 |
Available-for-sale Equity Securities, Gross Unrealized Gain |  | $ 35,400 |  |
Available-for-sale, Amortized Cost Basis, Price Per Share | $ 4.73 | $ 4.73 |  |

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