Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Loss Before Income Taxes

The following table presents components of loss before income taxes for the periods presented (in thousands):

	Year Ended December 31,
	2021		2020		2019
United States	$	(239,855)	$	(362,338)	$	(94,718)
International	607		40		—
Loss before income taxes	$	(239,248)	$	(362,298)	$	(94,718)

Schedule of Provision for Benefit From Income Taxes

Benefit from income taxes for the periods presented consisted of (in thousands):

	Year Ended December 31,
	2021		2020		2019
Deferred:
U.S. federal	(1,262)		—		—
U.S. state	—		—		—
Foreign	—		—		—
Total deferred:	(1,262)		—		—
Total benefit from income taxes	$	(1,262)	$	—	$	—

Schedule of Effective Tax Rate

The reconciliation between the U.S. federal statutory income tax rate of 21% to the Company’s effective tax for the periods presented is as follows:

	Year Ended December 31,
	2021		2020		2019
U.S. federal provision at statutory rate	21.0	%	21.0	%	21.0	%
State income taxes	4.4		0.7		2.9
Tax credits	1.5		0.6		1.9
Fair value of financial instruments	(2.3)		(15.6)		(6.8)
Stock-based compensation expense	2.0		(0.4)		(0.6)
Executive compensation	(1.1)		0.0		0.0
Other permanent items	(0.3)		0.0		0.0
Uncertain tax benefits	(0.8)		(0.3)		(0.9)
Change in valuation allowance	(24.0)		(6.0)		(17.5)
Effective tax rate	0.4	%	0.0	%	0.0	%

Schedule of Deferred Tax Assets and Liabilities

The Company’s deferred income tax assets and liabilities as of December 31, 2021 and 2020 were as follows (in thousands):

	Year Ended December 31,
	2021		2020
Deferred tax assets:
Net operating loss carry forward	$	120,544	$	62,346
Tax credits	6,296		3,975
Accruals and reserves	—		3,323
Stock-based compensation expense	6,944		267
Lease liability (ASC 842)	2,622		—
Accrued expenses	—		—
Inventory reserves	617		—
Other	15		2
Total deferred tax assets	137,038		69,913
Valuation allowance	(130,569)		(69,222)
Total deferred tax asset	6,469		691
Deferred tax liabilities:
Depreciation and amortization	1,185		691
Prepaid expenses	2,983		—
ROU asset (ASC 842)	2,301		—
Total deferred tax liabilities	6,469		691
Net deferred tax assets (liabilities)	$	—	$	—

Schedule of Reconciliation of the Total Amounts of Unrecognized Tax Benefits

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (in thousands):

	Year Ended December 31,
	2021		2020		2019
Unrecognized tax benefits as of the beginning of the year	$	3,975	$	2,397	$	1,473
Increases related to prior year tax positions	535		327		—
Increase related to current year tax positions	1,786		1,251		924
Unrecognized tax benefits as of the end of the year	$	6,296	$	3,975	$	2,397