Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	Mar. 31, 2023 $ / shares shares	Mar. 31, 2022 Tranche $ / shares shares	May 31, 2016	May 30, 2016	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period					1 year 4 months 24 days
Common stock, shares issued					92,997,158	87,103,007
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares	$ 40.75				$ 41.3	$ 70.9	$ 73.81
Total fair value amount, Vested | $					$ 24,900	$ 10,400	$ 14,100
Number of Shares, Granted					3,047,544
Number of shares vested					677,055
Risk-free interest rate					4.40%	1.90%	1.00%
Number of tranches | Tranche		2
Expected dividend yield					0.00%	0.00%	0.00%
Expected volatility					78.70%	76.20%	72.90%
Expected term					6 years	5 years 10 months 24 days	6 years
Equity-based compensation expense | $					$ 134,050	$ 91,400	$ 47,009
Weighted average grant date fair value per share | $ / shares					$ 28.92	$ 57.23	$ 54.09
Total intrinsic value of stock options exercised | $					$ 7,600	$ 42,800	$ 262,000
Unrecognized compensation cost related to stock options | $					56,100
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized equity-based compensation expense related to restricted stock | $					$ 125,200
Weighted average period of unrecognized compensation costs					1 year 8 months 12 days
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period	3 years	3 years
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares		$ 79.85
Number of Shares, Granted	2,195,135	794,424
PSUs [Member] | Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period	3 years	3 years
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares	$ 68.55	$ 126.49
Number of Shares, Granted	181,743	55,144
Risk-free interest rate	4.60%	1.44%
Expected dividend yield	0.00%	0.00%
Expected volatility	84.34%	82.53%
Expected term	2 years 10 months 2 days	2 years 10 months 2 days
PSUs [Member] | Non-executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted		66,296
First Anniversary of Original Vesting Date [Member] | RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted		21,878
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of stock options granted under the Plan					Stock options granted under the 2015 Plan in 2023 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 performance-based vesting provisions. The maximum term of stock options granted under the 2015 Plan is ten years.
Shares available for future issuance					3,875,539
Percentage of cumulative increase in number of shares for future issuance					4.00%
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					1,077,487
Common stock, shares issued					142,079	77,618	30,897
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares					$ 27.65	$ 34.15	$ 65.51
Expected dividend yield					0.00%	0.00%	0.00%
Expected term					6 months	6 months	6 months
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