Equity-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Mar. 31, 2022 $ / shares shares	May 31, 2016	Sep. 30, 2022 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) Tranche $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Dec. 31, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued			76,587,947		76,587,947		74,485,883
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares			$ 55.59	$ 171.65	$ 72.48	$ 63.13
Total fair value amount, Vested | $			$ 100	$ 3,700	$ 8,000	$ 5,700
Number of Shares, Granted			0		1,648,664
Number of Shares, Vested					(91,843)
Risk-free interest rate				1.00%	1.90%	0.90%
Number of tranches | Tranche					2
Expected dividend yield				0.00%	0.00%	0.00%
Expected volatility				75.20%	76.20%	72.70%
Expected term				6 years	5 years 10 months 24 days	6 years
Equity-based compensation expense | $			$ 25,215	$ 15,410	$ 66,774	$ 32,448
Weighted average period of unrecognized compensation costs					2 years 6 months
Weighted average grant date fair value per share | $ / shares				$ 105.17	$ 57.23	$ 50.73
Total intrinsic value of stock options exercised | $			1,400	$ 171,300	$ 41,800	$ 255,800
Unrecognized compensation cost related to stock options | $			106,500		106,500
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized equity-based compensation expense related to restricted stock | $			$ 110,400		$ 110,400
Weighted average period of unrecognized compensation costs					2 years 3 months 18 days
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	$ 79.85
Number of Shares, Granted	794,424
PSUs [Member] | Senior Executives [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	$ 126.49
Number of Shares, Granted	55,144
Risk-free interest rate	1.44%
Expected dividend yield	0.00%
Expected volatility	82.53%
Expected term	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
Equity-based compensation expense | $					$ 1,200
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining vesting period					3 years
Description of stock options granted under the Plan					Stock options granted under the 2015 Plan generally vest 25% on the first anniversary of the original vesting date, with the balance vesting monthly over the remaining three years, unless they contain specific performance-based vesting provisions. The maximum term of stock options granted under the 2015 Plan is ten years.Effective July 1, 2022, the Company adopted a retirement policy for equity awards granted to all employees other than the Company’s CEO (the “Policy”). The Policy applies to all equity awards granted after the date of adoption to employees who meet certain retirement eligibility criteria set forth in the Policy (the “Retirees”). Pursuant to the terms of the Policy, upon a Retiree’s eligible retirement: (i) all stock options held by the Retiree will continue to vest following the Retiree’s retirement date according to the original vesting schedule of the option until fully vested and all vested stock options held by such Retiree will remain exercisable until the earlier of the five-year anniversary of the Retiree’s retirement date or the original expiration date of the option, (ii) all unvested time-based RSUs held by the Retiree will vest in full on the Retiree’s retirement date and (iii) all unvested performance-based awards held by the Retiree will remain outstanding following the Retiree’s retirement date and the Retiree will remain eligible to earn a pro-rated portion of such performance-based awards at the end of the performance period based on actual performance during the performance period.
Shares available for future issuance			3,565,012		3,565,012
Percentage of cumulative increase in number of shares for future issuance					4.00%
2015 Plan [Member] | First Anniversary of Original Vesting Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vest percentage on the first anniversary					25.00%
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			1,272,886		1,272,886
Common stock, shares issued			24,316	20,410	24,316	20,410
Weighted Average Grant Date Fair Value per Share, Granted | $ / shares					$ 44.00	$ 47.52
Risk-free interest rate			2.52%	0.05%
Expected dividend yield			0.00%	0.00%	0.00%	0.00%
Expected volatility			95.30%	109.20%
Expected term			6 months	6 months	6 months	6 months
Maximum [Member] | 2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of stock options granted					10 years
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