Stock-Based Compensation - Valuation of Stock Options - Non-Performance Plans (Details) - Non-Performance Plans - $ / shares	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Stock-Based Compensation
Weighted-average grant date fair value of options granted ($ per share)	$ 3.72	$ 10.42
Stock options
Stock-Based Compensation
Minimum Volatility (%)	98.84%	103.65%
Maximum Volatility (%)	104.32%	109.54%
Minimum Risk-free interest rate (%)	3.69%	3.47%
Maximum Risk-free interest rate (%)	4.65%	4.48%
Dividend yield (%)	0.00%	0.00%
Stock options \| Minimum
Stock-Based Compensation
Expected term (in years)	5 years 2 months 23 days	5 years 9 months
Stock options \| Maximum
Stock-Based Compensation
Expected term (in years)	6 years 29 days	6 years 29 days

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of 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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