Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes (Tables) [Line Items]

Schedule of company’s current and deferred tax provisions

	Year Ended December 31,
	2020			2019
Current income tax provision
State	$	17		$	26
Total current income tax provision		17			26
Deferred income tax benefit
Federal		(2,366	)		(40,691	)
State		(2,351	)		(15,448	)
Total deferred income tax benefit		(4,717	)		(56,139	)
Total provision for income taxes		(4,700	)	$	(56,113	)

Schedule of reconciliation of the U.S. federal statutory income tax rate

	Year Ended December 31,
	2020		2019
Federal statutory income tax rate	21.0	%	21.0	%
State income taxes, net of federal benefits	3.0	%	4.9	%
Research and development tax credits	1.0	%	1.0	%
Interest accretion expense	5.5	%	(5.7	)%
Change in valuation allowance	(21.6	)%	—
Mark to market warrant	(5.7	)%	—
Other permanent items	(1.0	)%	(0.3	)%
Effective income tax rate	2.2	%	20.9	%

Schedule of net deferred tax liabilities

	Year Ended December 31,
	2020			2019
Deferred tax assets:
Net operating loss carryforwards	$	53,495		$	39,188
Research and development tax credit carryforwards		5,673			4,702
Stock-based compensation expense		1,304			535
Startup costs		729			785
Intangible assets		4,544			5,059
Deferred revenue		3,226			779
Unicap		6			6
Imputed interest on contingent payments		2,340			3,705
Legal fee capitalization and amortization		1,587			1,107
Other		1,158			342
Total deferred tax assets		74,062			56,208
Deferred tax liabilities:
In-process research and development		(27,930	)		(60,933	)
Total deferred tax liabilities		(27,930	)		(60,933	)
Valuation allowance		(46,139	)		—
Net deferred tax liabilities	$	(7	)	$	(4,725	)

Schedule of reconciliation of the beginning and ending amounts of unrecognized tax benefits

	Unrecognized Tax Benefits
Balance at December 31, 2018	$	544
Increase related to prior year tax positions		—
Increase related to current year tax provisions		242
Decrease for settlements		—
Reduction for lapse of applicable statute of limitations		—
Balance at December 31, 2019	$	786
Increase related to prior year tax positions		—
Increase related to current year tax provisions		242
Decrease for settlements		—
Reduction for lapse of applicable statute of limitations		—
Balance at December 31, 2020	$	1,028

Gx Acquisition Corp [Member]

Income Taxes (Tables) [Line Items]

Schedule of company’s current and deferred tax provisions

	Year Ended December 31,
	2020		2019
Federal
Current	$	189,389	$	669,883
Deferred		2,255		(1,653	)
State and Local
Current		—		—
Deferred		—		—
Change in valuation allowance		—		—
Income tax provision	$	191,644	$	668,230

Schedule of reconciliation of the U.S. federal statutory income tax rate

	Year Ended December 31,
	2020		2019
Statutory federal income tax rate	21.0	%	21.0	%
State taxes, net of federal tax benefit	—		—
Change in fair value of warrant liability	(21.4	)%	(72.2	)%
Business combination expenses	—		—
Valuation allowance	—		—
Income tax provision	(0.4	)%	(51.2	)%

Schedule of net deferred tax liabilities

	As of December 31,
	2020			2019
Deferred tax (liability) asset
Unrealized (gain) loss on marketable securities	$	(602	)	$	1,653
Total deferred tax (liability) assets		(602	)		1,653
Valuation Allowance		—			—
Deferred tax (liability) asset, net of allowance	$	(602	)	$	1,653