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Share based compensation arrangement by share based payment award equity instruments other than options vested in period weighted average grant date fair value amount.

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Share based compensation arrangements by share based payment award, performance shares.

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Share based compensation arrangements by share based payment award, Total shareholder return modifier.

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Aggregate number of common shares reserved for future issuance.

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The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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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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Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended
	May 31, 2016	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2023 shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2024 $ / shares shares	Dec. 31, 2023	Dec. 31, 2022 Tranche shares	Jun. 11, 2025 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued		105,330,693			105,330,693		102,029,594
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares					$ 10.49
Number of Shares, Granted					2,407,807
Unvested restricted stock units		5,281,618			5,281,618		5,547,530
Risk-free interest rate		4.10%	4.30%		4.10%	4.20%
Expected dividend yield		0.00%	0.00%		0.00%	0.00%
Expected volatility		79.40%	76.30%		75.80%	76.40%
Expected term		5 years 6 months	5 years 7 months 6 days		5 years 10 months 24 days	6 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period					1 year 2 months 23 days
Weighted average grant date fair value per share \| $ / shares		$ 5.74	$ 17.5		$ 6.79	$ 22.01
Total intrinsic value of stock options exercised \| $		$ 0.0	$ 0.8		$ 0.0	$ 2.0
Unrecognized compensation cost related to stock options \| $		$ 11.0			$ 11.0
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares that remained available for grant		7,666,787			7,666,787
2025 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance		12,759,619			12,759,619					12,831,965
Shares authorized for issuance		5,165,178			5,165,178
2015 and 2025 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of stock options granted under the Plan					Stock options generally vest as to one-third on the first anniversary of the original vesting date, with the balance vesting monthly over the remaining two years, unless they contain specific vesting provisions. The maximum term of stock options granted under the 2015 Plan, the 2025 Plan and the Inducement Plan is ten years.
2024 Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance		215,638	850,000		215,638	850,000
2016 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of stock options granted under the Plan	The 2016 Plan allows eligible employees to purchase shares of the Company’s common stock on the last day of each predetermined six-month offering period at 85% of the lower of the fair market value per share at the beginning or end of the applicable offering period.
Percentage of fair market value of common stock	85.00%
Shares available for future issuance		1,201,725			1,201,725
Common stock, shares issued		155,172	87,751		155,172	87,751
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares					$ 7.97	$ 19.02
Risk-free interest rate		4.24%	5.24%		4.24%	5.24%
Expected dividend yield		0.00%	0.00%		0.00%	0.00%
Expected volatility		66.20%	56.70%		66.20%	56.70%
Expected term		6 months	6 months		6 months	6 months
Service Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period					3 years
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares					$ 9.96
Number of Shares, Granted					2,184,207
Unvested restricted stock units		4,274,020			4,274,020
Market Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units		596,138			596,138
Market Awards [Member] \| RSUs [Member] \| Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period					3 years		3 years	3 years	3 years
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares					$ 15.76
Number of Shares, Granted					223,600
Risk-free interest rate					3.99%
Expected dividend yield					0.00%	0.00%
Expected volatility					67.60%
Expected term					3 years	3 years
Performance Based Awards with TSR Multiplier [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted					0
Unvested restricted stock units		389,251			389,251
Performance Based Awards with TSR Multiplier [Member] \| RSUs [Member] \| Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares							$ 36.16
Number of Shares, Granted							486,617
Risk-free interest rate							4.28%
Expected dividend yield							0.00%
Expected volatility							77.20%
Expected term							3 years
Performance Based Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares		$ 8.1	$ 25.16		$ 10.49	$ 34.2
Total fair value amount, Vested \| $		$ 1.4	$ 4.6		$ 18.9	$ 35.5
Unvested restricted stock units		22,209			22,209
Unrecognized equity-based compensation expense related to restricted stock \| $		$ 69.4			$ 69.4
Weighted average period of unrecognized compensation costs					1 year 6 months 18 days
Performance Based Awards [Member] \| RSUs [Member] \| Non-executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted									66,296
Number of tranches \| Tranche									2
Performance Based Awards [Member] \| First Anniversary of Original Vesting Date [Member] \| RSUs [Member] \| Non-executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted				21,878
Maximum [Member] \| 2016 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued		500,000			500,000
Maximum [Member] \| Performance Based Awards with TSR Multiplier [Member] \| RSUs [Member] \| Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangements by Share Based Payment Award, Performance Shares							200.00%
TSR modifier							125.00%
Minimum [Member] \| Performance Based Awards with TSR Multiplier [Member] \| RSUs [Member] \| Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangements by Share Based Payment Award, Performance Shares							0.00%
TSR modifier							75.00%