Note 2 - Investments (Tables)

6 Months Ended

Dec. 31, 2022

Notes Tables

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

	December 31, 2022
Available-for-Sale Investments	Adjusted		Unrealized		Unrealized			Fair
(In thousands)	Cost		Gain		Loss			Value
Mutual Funds - Corporate & Government Debt	$	19,997	$	—	$	(1,071	)	$	18,926
ETFs - Corporate & Government Debt		7,375		—		(463	)		6,912
Time Deposits		5,150		—		(35	)		5,115
Total	$	32,522	$	—	$	(1,569	)	$	30,953

	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
Time Deposits		—		—		—			—
Total	$	27,372	$	—	$	(1,199	)	$	26,173

	Carrying Value
	Short-Term Investments
(In thousands)	December 31, 2022		June 30, 2022
Mutual Funds - Corporate & Government Debt	$	18,926	$	19,191
ETFs - Corporate & Government Debt		6,912		6,982
Time Deposits - Maturities from 91-360 days		5,115		—
Total	$	30,953	$	26,173