Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Royalty revenues	$ 683	$ 488
Costs and expenses:
Research and development	36,852	32,857
Selling, general and administrative	12,482	13,043
Total operating expenses	49,334	45,900
Loss from operations	(48,651)	(45,412)
Other income (expense), net:
Interest income, net	3,259	4,069
Other expense, net	(39)	(98)
Total other income, net	3,220	3,971
Net loss	(45,431)	(41,441)
Preferred stock dividend payable on Series A Convertible Preferred Stock	(24)	(24)
Net loss attributable to common stockholders	$ (45,455)	$ (41,465)
Net loss per common share - basic	$ (0.95)	$ (0.93)
Net loss per common share - diluted	$ (0.95)	$ (0.93)
Weighted-average shares outstanding - basic	47,650	44,677
Weighted-average shares outstanding - diluted	47,650	44,677

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.