Note 4 - Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Marketable Securities [Table Text Block]

	Fair Value Measurements as of September 30, 2024 Using:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	55,375	$	392	$	(1	)	$	55,766
Commercial paper		14,285		17		—			14,302
Certificates of deposit		15,711		17		—			15,728
U.S. government treasuries		4,442		9		(3	)		4,448
Asset-backed securities		8,302		56		(1	)		8,357
Total assets	$	98,115	$	491	$	(5	)	$	98,601

	Fair Value Measurements as of December 31, 2023 Using:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	54,256	$	74	$	(49	)	$	54,281
Commercial paper		28,507		30		(3	)		28,534
Certificates of deposit		18,850		17		(1	)		18,866
U.S. government treasuries		16,127		3		(50	)		16,080
Asset-backed securities		10,456		23		(7	)		10,472
Total assets	$	128,196	$	147	$	(110	)	$	128,233

Investments Classified by Contractual Maturity Date [Table Text Block]

	As of
	September 30, 2024		December 31, 2023
Maturing in one year or less	$	62,588	$	93,117
Maturing after one year through two years		36,013		35,116
Total	$	98,601	$	128,233