Note 8 - Available-for-Sale Securities (Tables)

12 Months Ended

Dec. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Summary of Company's Cash Equivalents

The Company’s cash equivalents consisted of the following (in thousands):

	December 31, 2025		December 31, 2024
Cash equivalents
Money market fund	$	24,134	$	46,079
Commercial paper		2,488		-
Securities of U.S. government and government agencies		-		3,978
Corporate debt securities		826		9,663
Total cash equivalents	$	27,448	$	59,720

Summary of Company's of Available-for-sale Securities Measured at Fair Value on Recurring Basis

The Company’s available-for-sale securities that are measured at fair value on a recurring basis consisted of the following (in thousands):

		December 31, 2025
	Maturities	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Available-for-sale securities
Securities of U.S. government and government   agencies	Within one year	$	29,973	$	37	$	-		$	30,010
Commercial paper	Within one year		19,484		15		-			19,499
Certificates of deposit	Within one year		1,720		1		-			1,721
Corporate debt securities	Within one year		56,909		52		(1	)		56,960
Asset-backed securities	Within four years		5,914		7		(3	)		5,918
Total available-for-sale securities		$	114,000	$	112	$	(4	)	$	114,108