Note 4 - Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

	Fair Value Measurements at September 30, 2022
(In thousands)	Total		Level 1		Level 2		Level 3
Investment securities:
U.S treasury securities	$	15,093	$	-	$	15,093	$	-
Certificates of deposit		13,456		-		13,456		-
Total investment securities	$	28,549	$	-	$	28,549	$	-