Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Note 4 - Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Total Assets $ 59,764 $ 66,102
Business Combination, Contingent Consideration, Liability, Total 68,400
Fair Value, Inputs, Level 1 [Member]    
Total Assets 59,764 64,045
Business Combination, Contingent Consideration, Liability, Total
Fair Value, Inputs, Level 2 [Member]    
Total Assets 2,057
Business Combination, Contingent Consideration, Liability, Total
Fair Value, Inputs, Level 3 [Member]    
Total Assets
Business Combination, Contingent Consideration, Liability, Total 68,400
Equity Securities [Member]    
Investments, Fair Value Disclosure [1] 54,286 59,616
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Investments, Fair Value Disclosure [1] 54,286 59,616
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]
Certificates of Deposit [Member]    
Investments, Fair Value Disclosure [1] 5,478 4,429
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]    
Investments, Fair Value Disclosure [1] 5,478 4,429
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]    
Investments, Fair Value Disclosure [1]
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]    
Investments, Fair Value Disclosure [1]
Corporate Debt Securities [Member]    
Investments, Fair Value Disclosure [1]   2,057
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Investments, Fair Value Disclosure [1]  
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Investments, Fair Value Disclosure [1]   2,057
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Investments, Fair Value Disclosure [1]  
[1] Included in available-for-sale investments on the balance sheet