v3.25.3

Stockholders' Equity (Additional Information) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Options vested, fair value	$ 4.4	$ 3.6
Authorized shares under the plan (in shares)	12,150,000
Number of warrants excercised	1,711,668
Common stock shares issued upon cashless exercise of warrants	553,318
Equity Incentive Plan 2021
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of remaining shares available for issuance (in shares)	4,707,814
Options to purchase Common Stock
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized compensation cost	$ 11.4
Weighted-average remaining vesting period for recognition	2 years 10 months 24 days
Options outstanding, weighted average contractual life	7 years 3 months 18 days
Granted (in shares)	3,368,632
Inducement Grant Stock Options
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Granted (in shares)	1,855,913

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Cardiff Oncology, Inc. 10-Q