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Stockholders' equity - Summary Of Black-scholes Option-pricing Model, Based on Weighted-average Assumptions (Details)	9 Months Ended
	Sep. 30, 2025 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price	$ 31.9
Risk-free interest rate	4.03%
Expected dividend yield	0.00%
Expected volatility	81.32%
Expected life (years)	7 years

X

- Definition

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

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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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- Definition

The estimated measure of the 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 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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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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