Note 4 - Marketable Securities

9 Months Ended

Sep. 30, 2025

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4. Marketable Securities

The following tables summarize marketable securities held (in thousands):

	September 30, 2025:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	83,437	$	240	$	(3	)	$	83,674
Commercial paper		71,375		23		(3	)		71,395
Certificates of deposit		13,189		6		(1	)		13,194
U.S. government treasuries		1,678		—		—			1,678
Asset-backed securities		3,730		12		—			3,742
Total assets	$	173,409	$	281	$	(7	)	$	173,683

	December 31, 2024:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	44,794	$	175	$	(6	)	$	44,963
Commercial paper		12,081		5		(2	)		12,084
Certificates of deposit		15,262		8		(1	)		15,269
U.S. government treasuries		4,408		2		(11	)		4,399
Asset-backed securities		6,484		40		—			6,524
Total assets	$	83,029	$	230	$	(20	)	$	83,239

	As of
	September 30, 2025		December 31, 2024
Maturing in one year or less	$	121,824	$	56,386
Maturing after one year through two years		51,859		26,853
Total	$	173,683	$	83,239