Note 2 - Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2025

Notes Tables

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

	September 30, 2025
	Level 1		Level 2		Level 3		Total
	(In thousands)
Money market fund deposits	$	66,739	$	-	$	-	$	66,739
Mutual fund investments		12		-		-		12
Total	$	66,751	$	-	$	-	$	66,751
Amounts included in
Cash and cash equivalents	$	66,739	$	-	$	-	$	66,739
Investments in marketable securities		12		-		-		12
Total	$	66,751	$	-	$	-	$	66,751

	September 30, 2024
	Level 1		Level 2		Level 3		Total
	(In thousands)
Money market fund deposits	$	60,946	$	-	$	-	$	60,946
Mutual fund investments		11		-		-		11
Total	$	60,957	$	-	$	-	$	60,957
Amounts included in
Cash and cash equivalents	$	60,946	$	-	$	-	$	60,946
Investments in marketable securities		11		-		-		11
Total	$	60,957	$	-	$	-	$	60,957