Note 6 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

	December 31, 2023
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents (a)	$	40,229	$	—	$	—	$	40,229
Marketable securities:
Equity securities		22		—		—		22
Mutual funds		—		—		—		—
Total marketable securities		22		—		—		22
Total	$	40,251	$	—	$	—	$	40,251

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents (a)	$	17,722	$	—	$	—	$	17,722
Marketable securities:
Equity securities		69		—		—		69
Mutual funds		—		16,516		—		16,516
Total marketable securities		69		16,516		—		16,585
Total	$	17,791	$	16,516	$	—	$	34,307