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Note 4 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Jun. 30, 2016
--- | --- | ---
Business Combination, Contingent Consideration, Liability |  | $ 68,400 | $ 38,500
Total Assets |  | 61,673 | 28,582
Fair Value, Inputs, Level 1 [Member] |  |  |
Business Combination, Contingent Consideration, Liability |  |  |
Total Assets |  | 59,616 | 28,582
Fair Value, Inputs, Level 2 [Member] |  |  |
Business Combination, Contingent Consideration, Liability |  |  |
Total Assets |  | 2,057 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Business Combination, Contingent Consideration, Liability |  | 68,400 | 38,500
Total Assets |  |  |
Equity Securities [Member] |  |  |
Corporate securities | [1] | 59,616 | 28,582
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Corporate securities | [1] | 59,616 | 28,582
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Corporate securities | [1] |  |
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Corporate securities | [1] |  |
Corporate Debt Securities [Member] |  |  |
Corporate securities | [1] | 2,057 |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Corporate securities | [1] |  |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Corporate securities | [1] | 2,057 |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Corporate securities | [1] |  |
[1] | Included in available for sale securities on the balance sheet

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82895926&loc=d3e24584-111560 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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