Note 2 - Investments (Tables)

6 Months Ended

Dec. 31, 2024

Notes Tables

Debt Securities, Available-for-Sale [Table Text Block]

	December 31, 2024
Available-for-Sale Investments	Adjusted		Unrealized		Unrealized			Fair
(In thousands)	Cost		Gain		Loss			Value
Mutual Funds - Corporate & Government Debt	$	15,236	$	—	$	(779	)	$	14,457
ETFs - Corporate & Government Debt		7,375		—		(301	)		7,074
Total	$	22,611	$	—	$	(1,080	)	$	21,531

	June 30, 2024
Available-for-Sale Investments	Adjusted		Unrealized		Unrealized			Fair
(In thousands)	Cost		Gain		Loss			Value
Mutual Funds - Corporate & Government Debt	$	15,276	$	—	$	(850	)	$	14,426
ETFs - Corporate & Government Debt		7,375		—		(327	)		7,048
Total	$	22,651	$	—	$	(1,177	)	$	21,474

	Carrying Value				Carrying Value
	Short-Term Investments				Long-Term Investments
(In thousands)	December 31, 2024		June 30, 2024		December 31, 2024		June 30, 2024
Money Market Funds
Mutual Funds - Corporate & Government Debt	$	14,457	$	14,426	$	—	$	—
ETFs - Corporate & Government Debt		7,074		7,048		—		—
Total	$	21,531	$	21,474	$	—	$	—