Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Stockholders' Equity Note [Abstract]

Schedule of Common Stock

As of June 30, 2022, the par value of the Class A, Class B and Class C shares was $2,403, $275, and $56, respectively.

	Shares Authorized		Shares Issued		Shares Outstanding
Class A		1,000,000,000		240,397,065		240,397,065
Class B		100,000,000		27,390,397		27,390,397
Class C		200,000,000		5,555,555		5,555,555
		1,300,000,000		273,343,017		273,343,017

Activity under Plans

Activity under the Plans is as follows:

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of January 1, 2022		15,893,755		$	4.81		5.9	$	23,876
Granted		—		$	—
Forfeited		(953,627	)	$	6.64
Expired		(49,542	)	$	5.63
Exercised		(2,060,215	)	$	2.13
Outstanding as of June 30, 2022		12,830,371			4.81		5.8	$	6,198
Vested and expected to vest as of December 31, 2021		15,395,398		$	4.61		5.8	$	23,752
Vested and expected to vest as of June 30, 2022		12,630,154		$	4.91		5.7	$	6,194
Options exercisable as of December 31, 2021		13,407,882		$	4.38		5.5	$	23,120
Options exercisable as of June 30, 2022		11,634,556		$	4.82		5.6	$	6,198

Summary of Unvested Restricted Stock Unit Activity

Activity for the restricted stock units is as follows:

	Shares			Weighted Average Grant Date Fair Value
Unvested as of January 1, 2022		11,718,813		$	19.63
Granted		10,622,982			4.09
Vested		(3,005,281	)		12.55
Forfeited		(1,787,601	)		9.04
Unvested as of June 30, 2022		17,548,913		$	7.75

Summary of Performance-based Market Condition Share Awards

	Shares			Weighted Average Grant Date Fair Value
Unvested as of January 1, 2022		—		$	—
Granted		25,423,674			2.21
Vested		—			—
Cancelled/Forfeited		(1,568,889	)		2.62
Unvested as of June 30, 2022		23,854,785		$	2.18

Schedule of Weighted Average Assumptions used to Determine Estimated Fair Value of Performance-based Market Condition Share Awards Granted

The weighted average estimated fair value of the performance-based market condition share awards granted during the six months ended June 30, 2022 was determined using a Monte-Carlo valuation simulation, with the following most significant weighted-average assumptions:

	Six Months Ended June 30,
	2022
Risk-free rate		2.28	%
Term to end of performance period (yrs)	3 years
Valuation date stock price	$	3.43
Expected volatility		75	%
Expected dividend yield		0	%

Stock-Based Compensation Expense

Stock-based compensation expense was classified in the condensed consolidated statements of operations and comprehensive loss as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenues	$	426	$	521	$	761	$	910
Research and development		2,699		2,171		4,881		3,678
Selling and marketing		1,304		2,100		3,099		3,989
General and administrative		10,478		5,934		18,251		10,791
Total	$	14,907	$	10,726	$	26,992	$	19,368