Note 2 - Investments (Tables)

9 Months Ended

Mar. 31, 2023

Notes Tables

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

	March 31, 2023
Available-for-Sale Investments	Adjusted		Unrealized		Unrealized			Fair
(In thousands)	Cost		Gain		Loss			Value
Mutual Funds - Corporate & Government Debt	$	19,990	$	—	$	(962	)	$	19,028
ETFs - Corporate & Government Debt		7,375		—		(398	)		6,977
Time Deposits		3,737		—		(28	)		3,709
Total	$	31,102	$	—	$	(1,388	)	$	29,714

	June 30, 2022
Available-for-Sale Investments	Adjusted		Unrealized		Unrealized			Fair
(In thousands)	Cost		Gain		Loss			Value
Mutual Funds - Corporate & Government Debt	$	19,997	$	—	$	(806	)	$	19,191
ETFs - Corporate & Government Debt		7,375		—		(393	)		6,982
Total	$	27,372	$	—	$	(1,199	)	$	26,173

	Carrying Value
	Short-Term Investments
(In thousands)	March 31, 2023		June 30, 2022
Mutual Funds - Corporate & Government Debt	$	19,028	$	19,191
ETFs - Corporate & Government Debt		6,977		6,982
Time Deposits - Maturities from 91-360 days		3,709		—
Total	$	29,714	$	26,173