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Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2022 Tranche shares	May 31, 2016	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Jun. 30, 2024 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued			102,029,594	92,997,158
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares			$ 32.43
Number of Shares, Granted			3,601,376
Unvested restricted stock units			5,547,530	4,041,753
Risk-free interest rate			4.20%	4.40%	1.90%
Expected dividend yield			0.00%	0.00%	0.00%
Expected volatility			76.30%	78.70%	76.20%
Expected term			6 years	6 years	5 years 10 months 24 days
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period			1 year 1 month 6 days
Weighted average grant date fair value per share \| $ / shares			$ 21.21	$ 28.92	$ 57.23
Total intrinsic value of stock options exercised \| $			$ 3.1	$ 7.6	$ 42.8
Unrecognized compensation cost related to stock options \| $			$ 22.2
2015 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 and the Inducement Plan is ten years.
Shares available for future issuance			4,809,483
Percentage of cumulative increase in number of shares for future issuance			4.00%
2024 Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future issuance			368,902			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			856,897
Common stock, shares issued			220,590	142,079	77,618
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares			$ 13.54	$ 27.65	$ 34.15
Expected dividend yield			0.00%	0.00%	0.00%
Expected term			6 months	6 months	6 months
Service 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			$ 29.9
Number of Shares, Granted			2,828,675
Unvested restricted stock units			4,596,901
Market Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units			468,277
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
Weighted Average Grant Date Fair Value per Share, Granted \| $ / shares			$ 51.12	$ 68.55	$ 126.49
Number of Shares, Granted			286,084	181,743	55,144
Risk-free interest rate			4.28%	4.60%	1.44%
Expected dividend yield			0.00%	0.00%	0.00%
Expected volatility			77.20%	84.34%	82.53%
Expected term			3 years	3 years	3 years
Performance Based Awards with TSR Multiplier [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units			437,934
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			$ 32.43	$ 41.3	$ 70.9
Total fair value amount, Vested \| $			$ 40.0	$ 24.9	$ 10.4
Unvested restricted stock units			44,418
Unrecognized equity-based compensation expense related to restricted stock \| $			$ 106.5
Weighted average period of unrecognized compensation costs			1 year 7 months 6 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
Maximum [Member] \| Service Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period			3 years
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] \| Service Awards [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period			1 year
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%