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Note 3 - Cash, Cash Equivalents, and Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

		*September 30, 2024*
(in thousands)		*Amortized Cost*				*Gross Unrealized Gains*				*Gross Unrealized Losses*				*Fair Value*
Cash equivalents (contractual maturity within 90 days):
Money market funds		$	3,897			$	—			$	—			$	3,897
Total cash equivalents			3,897				—				—				3,897
Cash			10,748				—				—				10,748
Total cash and cash equivalents		$	14,645			$	—			$	—			$	14,645

		*December 31, 2023*
(in thousands)		*Amortized Cost*				*Gross Unrealized Gains*				*Gross Unrealized Losses*				*Fair Value*
Cash equivalents (contractual maturity within 90 days):
U.S. Treasury securities		$	19,883			$	1			$	—			$	19,884
Money market funds			5,113				—				—				5,113
Total cash equivalents			24,996				1				—				24,997
Cash			3,824				—				—				3,824
Total cash and cash equivalents		$	28,820			$	1			$	—			$	28,821

Marketable securities (contractual maturity greater than 90 days but less than 1 year):
U.S. Treasury securities		$	6,179			$	—			$	—			$	6,179
Total marketable securities		$	6,179			$	—			$	—			$	6,179