Note 7 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

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

	September 30, 2023
(In thousands)	Level 1		Level 2		Level 3		Total Fair Value
Cash equivalents
Money market accounts	$	25,947	$	−	$	−	$	25,947
Marketable securities
Corporate, municipal debt and treasury securities		5,147		−		−		5,147
Total assets	$	31,094	$	−	$	−	$	31,094