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Note 2 - Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

Exercise price per warrant		$	33.00
Conversion rate - common shares per warrant			1.50
Closing price of common stock		$	23.72
Volatility			75	%
Risk-free interest rate			5.40	%
Expected life of option (in years)			0.3
Dividend yield		zero

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Three months ended March 31,
		2025				2024
Operating expenses
Research and development		$	(13,666	)		$	(16,233	)
General and administrative			(10,920	)			(3,701	)
Other segment items(a)			1,183				44,977
Net income (loss)		$	(23,403	)		$	25,043

		March 31, 2025				December 31, 2024
Cash and cash equivalents		$	117,328			$	128,574

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

		Three months ended
		March 31,
		2025				2024
Numerator, basic:
Net income (loss)		$	(23,403	)		$	25,043
Denominator, basic:
Weighted average common shares outstanding			48,262				43,001
Net income (loss) per share, basic		$	(0.48	)		$	0.58
Numerator, diluted:
Net income (loss)		$	(23,403	)		$	25,043
Adjustment for change in fair value of warrant liabilities			—				(43,792	)
Adjusted numerator, diluted		$	(23,403	)		$	(18,749	)
Denominator, diluted:
Weighted average common shares outstanding			48,262				43,001
Dilutive effect of common stock warrants			—				1,101
Weighted average dilutive common shares			48,262				44,102
Net loss per share, diluted		$	(0.48	)		$	(0.43	)
Dilutive common stock options excluded from net loss per share, diluted			3,751				2,664
Dilutive Performance Awards excluded from net loss per share, diluted			7				7

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- Definition

Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

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