v3.23.1

Note 2 - Investments and Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

		As of March 31, 2023
		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
Cash, cash equivalents and restricted cash:
Cash		$	1,716			$	—			$	—			$	1,716
Money market funds			146				—				—				146
U.S. government agency securities			5,677				—				—				5,677
Commercial paper			5,814				—				—				5,814
Total cash, cash equivalents, and restricted cash		$	13,353			$	—			$	—			$	13,353

		As of December 31, 2022
		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
Cash, cash equivalents and restricted cash:
Cash		$	13,275			$	—			$	—			$	13,275
Money market funds			321				—				—				321
U.S. government agency securities			2,444				—				—				2,444
Commercial paper			4,235				—				—				4,235
Total cash, cash equivalents and restricted cash			20,275				—				—				20,275
Short-term investments:
Commercial paper			495				—				—				495
Total short-term investments			495				—				—				495
Total cash, cash equivalents, restricted cash and short-term investments		$	20,770			$	—			$	—			$	20,770

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

		As of March 31, 2023
		Fair Value				Level I				Level II				Level III
Assets
Money market funds		$	146			$	146			$	—			$	—
U.S. government agency securities			5,677				—				5,677				—
Commercial paper			5,814				—				5,814				—
Total assets measured at fair value		$	11,637			$	146			$	11,491			$	—
Liabilities
Warrant liability			1,787				—				—				1,787
Total liabilities measured at fair value		$	1,787			$	—			$	—			$	1,787

		As of December 31, 2022
		Fair Value				Level I				Level II				Level III
Assets
Money market funds		$	321			$	321			$	—			$	—
U.S. government agency securities			2,444				—				2,444				—
Commercial paper			4,730				—				4,730				—
Total assets measured at fair value		$	7,495			$	321			$	7,174			$	—
Liabilities
Warrant liability			7,098				—				—				7,098
Total liabilities measured at fair value		$	7,098			$	—			$	—			$	7,098

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Three Months Ended March 31, 2023
Fair value—beginning of period		$	7,098
Change in fair value of 2022 Warrants liability			(5,311	)
Fair value—end of period		$	1,787

X

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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