Note 7 - Investments (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Marketable Securities [Table Text Block]

		*Amortized*				*Unrealized*				*Unrealized*
		*Cost Basis*				*Gains*				*Losses*				*Fair Value*
Assets:
Cash equivalents
Money market funds		$	4			$	—			$	—			$	4
U.S. government			9,439				—				—				9,439
Total cash equivalents			9,443				—			$	—				9,443
Marketable securities:
U.S. government			24,803				2				—				24,805
Corporate bonds			3,545				4				—				3,549
Commercial paper			1,434				1				—				1,435
Certificates of deposit			516				1				—				517
Total marketable securities			30,298				8				—				30,306
Total assets at fair value		$	39,741			$	8			$	—			$	39,749

Investments Classified by Contractual Maturity Date [Table Text Block]

		*March 31,*				*December 31,*
		*2026*				*2025*
Maturities within one year		$	39,749			$	49,329
Maturities after one year through three years			—				—
Total investments		$	39,749			$	49,329