Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of Current and Deferred Tax Provision

A summary of the Company’s current and deferred tax provision is as follows:

	Year Ended December 31,
	2021		2020
Current income tax expense (benefit):
Federal	$	-	$	-
State		17		17
Total current income tax expense (benefit)		17		17
Deferred income tax expense (benefit):
Federal		1		(2,366	)
State		2		(2,351	)
Total deferred tax expense (benefit)		3		(4,717	)
Total (benefit) from income taxes	$	20	$	(4,700	)

Schedule of Reconciliation of the U.S. Federal Statutory Income Tax

A reconciliation of the U.S. federal statutory income tax rate to the Company’s effective income tax rate is as follows:

	Year Ended December 31,
	2021			2020
Federal statutory income tax rate		21.0	%		21.0	%
State income taxes, net of federal benefits		9.8	%		3.0	%
Research and development tax credits		1.5	%		1.0	%
Interest accretion expense		8.6	%		5.5	%
Change in valuation allowance		(46.1	)%		(21.6	)%
Mark to market warrant		2.8	%		(5.7	)%
Other permanent items		2.4	%		(1.0	)%
Effective income tax rate		0.0	%		2.2	%

Schedule of Net Deferred Tax Liabilities

Net deferred tax liabilities as of years ended December 31, 2021 and 2020 consisted of the following:

	Year Ended December 31,
	2021			2020
Deferred tax assets:
Net operating loss carryforwards	$	88,327		$	53,495
Research and development tax credit carryforwards		7,672			5,673
Stock-based compensation expense		11,748			1,304
Startup costs		697			729
Intangible assets		4,471			4,544
Deferred revenue		1,103			3,226
Unicap		6			6
Imputed interest on contingent payments		4,410			2,340
Legal fee capitalization and amortization		1,550			1,587
Other		1,535			1,158
Total deferred tax assets		121,519			74,062
Deferred tax liabilities:
In-process research and development		(29,232	)		(27,930	)
Total deferred tax liabilities		(29,232	)		(27,930	)
Valuation allowance		(92,297	)		(46,139	)
Net deferred tax liabilities	$	(10	)	$	(7	)

Schedule of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:

	Unrecognized Tax Benefits
Balance at December 31, 2019	$	786
Increase related to current year tax provisions		242
Balance at December 31, 2020	$	1,028
Increase related to current year tax provisions		242
Balance at December 31, 2021	$	1,270