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Note 4 - Fair Value Measurements - Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jun. 30, 2018
Interest rate swaps $ 455 $ 1,325
Net investment hedge 2,170  
Foreign exchange contracts 3,732 1,357
Interest rate swaps 721  
Contingent acquisition payments (a) [1] 5,730 7,535
Net investment hedge 2,264  
Foreign exchange contracts   4,204
Fair Value, Inputs, Level 1 [Member]    
Interest rate swaps
Net investment hedge  
Foreign exchange contracts
Interest rate swaps  
Contingent acquisition payments (a) [1]
Net investment hedge  
Foreign exchange contracts  
Fair Value, Inputs, Level 2 [Member]    
Interest rate swaps 455 1,325
Net investment hedge 2,170  
Foreign exchange contracts 3,732 1,357
Interest rate swaps 721  
Contingent acquisition payments (a) [1]
Net investment hedge 2,264  
Foreign exchange contracts   4,204
Fair Value, Inputs, Level 3 [Member]    
Interest rate swaps
Net investment hedge  
Foreign exchange contracts
Interest rate swaps  
Contingent acquisition payments (a) [1] 5,730 7,535
Net investment hedge  
Foreign exchange contracts  
Deferred Compensation Plan [Member]    
Marketable securities - deferred compensation plan 2,485 2,362
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]    
Marketable securities - deferred compensation plan 2,485 2,362
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member]    
Marketable securities - deferred compensation plan
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member]    
Marketable securities - deferred compensation plan
[1] The fair value of our contingent consideration arrangement is determined based on our evaluation as to the probability and amount of any deferred compensation that has been earned to date.