Note 8 - Fair Value Measurement (Tables)

3 Months Ended

Sep. 30, 2023

Notes Tables

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	September 30, 2023
	Carrying		Fair Value Measured Using						Fair
(In thousands)	Amount		Level 1		Level 2		Level 3		Value
Available-for-Sale Investments
Short-Term Investments
Mutual Funds - Corporate & Government Debt		18,921		18,921		—		—		18,921
ETFs - Corporate & Government Debt		6,942		6,942		—		—		6,942
Total Available-for-Sale Investments	$	25,863	$	25,863	$	—	$	—	$	25,863

	June 30, 2023
	Carrying		Fair Value Measured Using						Fair
(In thousands)	Amount		Level 1		Level 2		Level 3		Value
Available-for-Sale Investments
Short-Term Investments
Mutual Funds - Corporate & Government Debt		18,965		18,965		—		—		18,965
ETFs - Corporate & Government Debt		6,958		6,958		—		—		6,958
Time deposits: 91-360 days		1,996		—		1,996		—		1,996
Total Available-for-Sale Investments	$	27,919	$	25,923	$	1,996	$	—	$	27,919