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Note 4 - Fair Value Measurements - Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Interest rate swaps $ 14 $ 52
Foreign exchange contracts 1,521 0
Interest rate swaps 1,678 1,432
Contingent acquisition payments (a) [1] 7,006 6,418
Foreign exchange contracts   3,052
Fair Value, Inputs, Level 1 [Member]    
Interest rate swaps 0 0
Foreign exchange contracts 0 0
Interest rate swaps 0  
Contingent acquisition payments (a) [1] 0 0
Foreign exchange contracts   0
Fair Value, Inputs, Level 2 [Member]    
Interest rate swaps 14 52
Foreign exchange contracts 1,521 0
Interest rate swaps 1,678 1,432
Contingent acquisition payments (a) [1] 0 0
Foreign exchange contracts   3,052
Fair Value, Inputs, Level 3 [Member]    
Interest rate swaps 0 0
Foreign exchange contracts 0 0
Interest rate swaps 0  
Contingent acquisition payments (a) [1] 7,006 6,418
Foreign exchange contracts   0
Deferred Compensation Plan [Member]    
Marketable securities - deferred compensation plan 2,429 2,354
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]    
Marketable securities - deferred compensation plan 2,429 2,354
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 2 [Member]    
Marketable securities - deferred compensation plan 0 0
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 3 [Member]    
Marketable securities - deferred compensation plan $ 0 $ 0
[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.