Note 5 - Fair Value Measurements (Tables)

6 Months Ended

Dec. 31, 2024

Notes Tables

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

		Fair Value Measurements at December 31, 2024
Financial Assets	Balance Sheet Location	Level 1		Level 2		Level 3		Total
Corporate money market funds (1)	Cash and cash equivalents	$	13,830	$	-	$	-	$	13,830
U.S. Treasury bills (2)	Investments, short-term		-		82,049		-		82,049
U.S. Treasury notes (2)	Investments, long-term		-		45,092		-		45,092
Total		$	13,830	$	127,141	$	-	$	140,971

		Fair Value Measurements at June 30, 2024
Financial Assets	Balance Sheet Location	Level 1		Level 2		Level 3		Total
Corporate money market funds (1)	Cash and cash equivalents	$	33,487	$	-	$	-	$	33,487
U.S. Treasury bills (2)	Investments, short-term		-		91,319		-		91,319
U.S. Treasury notes (2)	Investments, long-term		-		34,772		-		34,772
Total		$	33,487	$	126,091	$	-	$	159,578