Note 6 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			Fair Value Measurements Using
			Quoted Prices		Significant
			in Active		Other
	Balance as of		Markets for		Observable
	September 30,		Identical Assets		Inputs
	2024		(Level 1)		(Level 2)
Assets:
Cash equivalents
Money market funds	$	20,878	$	20,878	$	—
Commercial paper		3,991		—		3,991
Total cash equivalents		24,869		20,878		3,991
Marketable securities
U.S. government		75,732		75,732		—
Corporate bonds		15,596		—		15,596
Commercial paper		36,995		—		36,995
Certificates of deposit		978		—		978
Total marketable securities		129,301		75,732		53,569
Total assets at fair value	$	154,170	$	96,610	$	57,560

			Fair Value Measurements Using
			Quoted Prices		Significant
			in Active		Other
	Balance as of		Markets for		Observable
	December 31,		Identical Assets		Inputs
	2023		(Level 1)		(Level 2)
Assets:
Cash equivalents
Money market funds	$	9,704	$	9,704	$	—
Marketable securities
U.S. government		28,634		28,634		—
Corporate bonds		6,738		—		6,738
Commercial paper		7,101		—		7,101
Certificates of deposit		3,995		—		3,995
Total marketable securities		46,468		28,634		17,834
Total assets at fair value	$	56,172	$	38,338	$	17,834