Stock Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2024

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Schedule of Non-vested Restricted Stock Units Activity

The table below summarizes the restricted stock unit ("RSU") activity for the six months ended June 30, 2024:

				Weighted-
				Average
	Shares			Fair Value
Unvested RSUs—December 31, 2023		36,329,881		$	10.56
Granted		10,047,960			11.85
Vested		(12,334,980	)		10.67
Forfeited		(917,602	)		10.52
Unvested RSUs—June 30, 2024		33,125,259			10.91

Summary of Share-based Compensation Arrangements by Share-based Payment Award

The table below summarizes the stock option activity for the six months ended June 30, 2024:

						Weighted-
						Average
				Weighted-		Remaining		Aggregate
				Average		Contractual		Intrinsic
				Exercise		Life		Value
	Shares			Price		(in years)		(in thousands)
Options outstanding—December 31, 2023		35,788,469		2,96			4.0	$	301,563
Exercised		(7,865,250	)		2.75
Forfeited and canceled		(10,217	)		3.49
Options outstanding—June 30, 2024		27,913,002		$	3.02		3.6	$	225,727
Options exercisable—June 30, 2024		26,936,712		$	2.90		3.5	$	221,157
Options vested and expected to vest—June 30, 2024		27,878,594		$	3.02		3.6	$	225,584

Summary of Share-based Payment Arrangement, Expensed and Capitalized, Amount

Stock-Based Compensation—Stock-based compensation expense has been recorded in the accompanying condensed consolidated statements of operations and comprehensive income (loss) as follows for the three and six months ended June 30, 2024 and 2023 (in thousands):

	For the Three Months Ended				For the Six Months Ended
	June 30,				June 30,
	2024		2023		2024		2023
Cost of revenues	$	2,672	$	2,299	$	4,754	$	4,199
Research and development		11,515		6,600		22,586		12,475
Sales and marketing		6,785		8,749		12,513		16,008
General and administrative		19,153		17,838		45,243		32,038
Total stock-based compensation expense	$	40,125	$	35,486	$	85,096	$	64,720

2021 Employee Stock Purchase Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of the ESPP purchase rights sold during the six months ended June 30, 2024 was estimated using the Black-Scholes option pricing model with the following assumptions:

Expected term (in years)	0.5
Expected volatility	25%
Expected dividend yield	0%
Risk-free interest rate	5.5%