Stock Based Compensation - Fair Values of Award Granted Estimated Using Black-Scholes Valuation Model (Detail) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Time-Based and Performance-Based Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted average share price of the Company (USD per share)	$ 4.27	$ 7.01	$ 4.58	$ 7.32
Risk-free interest rate, minimum (%)	4.24%	3.92%	4.10%	3.92%
Risk-free interest rate, maximum (%)	4.31%	4.09%	4.31%	4.40%
Volatility, minimum (%)	80.60%	81.50%	79.30%	81.50%
Volatility, maximum (%)	85.10%	84.30%	85.10%	84.30%
Time-Based and Performance-Based Awards \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected option life (in years)	5 years 3 months 7 days	5 years 3 months 7 days	5 years 3 months 7 days	5 years 3 months 7 days
Time-Based and Performance-Based Awards \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected option life (in years)	6 years 29 days	6 years 29 days	6 years 29 days	6 years 4 months 28 days
Time-Based Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted average share price of the Company (USD per share)	$ 7.22		$ 7.22
Risk-free interest rate (%)	3.58%		3.58%
Expected option life (in years)	7 years		7 years
Volatility (%)	130.30%		130.30%

Share based compensation arrangement by share based payment award weighted average share price.

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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 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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- Definition

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

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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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- Definition

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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