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Note 4 - Fair Value Measurements - Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Foreign exchange contracts, assets $ 71 $ 255
Foreign exchange contracts 0 1,222
Interest rate swaps 2,555 3,096
Contingent acquisition payments (a) 2,167 3,333 [1]
Fair Value, Inputs, Level 1 [Member]    
Foreign exchange contracts, assets 0 0
Foreign exchange contracts 0 0
Interest rate swaps 0 0
Contingent acquisition payments (a) 0 0
Fair Value, Inputs, Level 2 [Member]    
Foreign exchange contracts, assets 71 255
Foreign exchange contracts 0 1,222
Interest rate swaps 2,555 3,096
Contingent acquisition payments (a) 0 0
Fair Value, Inputs, Level 3 [Member]    
Foreign exchange contracts, assets 0 0
Foreign exchange contracts 0 0
Interest rate swaps 0 0
Contingent acquisition payments (a) 2,167 3,333
Deferred Compensation Plan [Member]    
Marketable securities - deferred compensation plan 3,175 2,988
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]    
Marketable securities - deferred compensation plan 3,175 2,988
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 contingent consideration that has been earned to date.