Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details)

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Note 4 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Contingent Consideration $ 40,900 $ 68,400
Total Assets   61,673
Fair Value, Inputs, Level 1 [Member]    
Contingent Consideration
Total Assets   59,616
Fair Value, Inputs, Level 2 [Member]    
Contingent Consideration
Total Assets   2,057
Fair Value, Inputs, Level 3 [Member]    
Contingent Consideration 40,900 68,400
Total Assets  
Equity Securities [Member]    
Corporate securities [1] 47,247 59,616
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Corporate securities [1] 47,247 59,616
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 investments on the balance sheet