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EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Schedule of Stock Option Activity under the Plans

Stock option activity under the Plans for the year ended December 31, 2023 was as follows:

			Number of Shares						Weighted- Average Exercise Price						Weighted- Average Remaining Contractual Term (in Years)						Aggregate Intrinsic Value
Balance—December 31, 2022			18,153,195						$	6.07					5.41						$	120,289
Granted			454,626						14.72
Exercised			(6,621,448)						4.13
Canceled			(821,235)						13.41
Balance—December 31, 2023			11,165,138						$	7.03					5.22						$	142,444
Options vested			9,462,200						$	5.70					4.74						$	131,590

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

RSU activity under the Plans for the year ended December 31, 2023 was as follows:

			Number of Shares						Weighted-Average Grant Date Fair Value						Aggregate Intrinsic Value
Unvested balance—December 31, 2022			22,773,053						$	17.75					$	269,779
Granted			7,335,245						12.41
Vested			(8,449,866)						17.73
Forfeited			(3,297,386)						19.91
Unvested balance—December 31, 2023			18,361,046						$	15.24					$	355,653

Summary of Weighted Average Assumptions to Record Stock-Based Compensation Expense for Stock Options Granted

A summary of the weighted-average assumptions we utilized to record stock-based compensation expense for stock options granted is as follows:

			Year Ended December 31,
			2023						2022						2021
Fair value of common stock			$	14.72					$	12.80					$	29.99
Risk-free interest rate			3.7		%				3.1		%				1.3		%
Expected term (in years)			6.1						6.1						6.2
Expected volatility			57.3		%				57.7		%				57.1		%
Dividend yield			—		%				—		%				—		%

The following table summarizes the assumptions used in estimating the fair value of ESPP Rights:

			Year Ended December 31,
			2023						2022			2021
Risk-free interest rate			3.9% - 5.5%						1.4% - 4.6%			0.0% - 0.5%
Expected term (in years)			0.5 - 2.0						0.5 - 2.0			0.5 - 2.0
Expected volatility			39.2% - 61.0%						59.4% - 76.5%			48.3% - 61.9%
Dividend yield			—%						—%			—%

Summary of Stock-Based Compensation Expense in the Consolidated Statements of Operations

Stock-based compensation expense is classified in the Consolidated Statements of Operations as follows:

			Year Ended December 31,
			2023						2022						2021
Cost of revenue			$	2,593					$	3,089					$	2,092
Research and development			49,931						48,779						42,783
Sales and marketing			31,299						30,092						25,992
General and administrative			31,352						28,703						20,316
Restructuring related charges			(5,605)						122						—
Total			$	109,570					$	110,785					$	91,183

Summary of Shares of Common Stock Reserved for Future Issuance

Our common stock reserved for future issuance was as follows:

			December 31, 2023						December 31, 2022
Stock options outstanding			11,165,138						18,153,195
RSUs outstanding			18,361,046						22,773,053
Shares available for future grants			16,913,085						8,819,998
Total shares of common stock reserved			46,439,269						49,746,246

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