Note 4 - Fair Value Measurements - Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2024		Jun. 30, 2024
Interest rate swaps	$ 2,537		$ 4,673
Debt Securities, Available-for-Sale	2,784		2,679
Equity securities	2,088		2,009
Foreign exchange contracts	162
Contingent consideration (a)	660	[1]	660
Fair Value, Inputs, Level 1 [Member]
Interest rate swaps	0		0
Debt Securities, Available-for-Sale	0		0
Equity securities	0		0
Foreign exchange contracts	0
Contingent consideration (a)	0	[1]	0
Fair Value, Inputs, Level 2 [Member]
Interest rate swaps	2,537		4,673
Debt Securities, Available-for-Sale	0		0
Equity securities	0		0
Foreign exchange contracts	162
Contingent consideration (a)	0	[1]	0
Fair Value, Inputs, Level 3 [Member]
Interest rate swaps	0		0
Debt Securities, Available-for-Sale	2,784		2,679
Equity securities	2,088		2,009
Foreign exchange contracts	0
Contingent consideration (a)	660	[1]	660
Deferred Compensation Plan [Member]
Marketable securities - deferred compensation plan	4,838		4,917
Deferred Compensation Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Marketable securities - deferred compensation plan	4,838		4,917
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.