Note 7 - Investments (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Marketable Securities [Table Text Block]

		*Amortized*				*Unrealized*				*Unrealized*
		*Cost Basis*				*Gains*				*Losses*				*Fair Value*
Assets:
Cash equivalents
Money market funds		$	1,318			$	—			$	—			$	1,318
Marketable securities:
U.S. government			25,033				—				(3	)			25,030
Corporate bonds			3,289				1				—				3,290
Certificates of deposit			522				—				—				522
Total marketable securities			28,844				1				(3	)			28,842
Total assets at fair value		$	30,162			$	1			$	(3	)		$	30,160

Investments Classified by Contractual Maturity Date [Table Text Block]

		*June 30,*				*December 31,*
		*2026*				*2025*
Maturities within one year		$	30,160			$	49,329
Maturities after one year through three years			—				—
Total investments		$	30,160			$	49,329