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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Components of Loss Before Income Taxes

The components of loss before income taxes are as follows (in thousands):

		Years Ended December 31,
		2020				2019				2018
Domestic		$	(195,617	)		$	2,538			$	(38,472	)
Foreign			6,686				(79,180	)			(47,644	)
Loss before provision for income taxes		$	(188,931	)		$	(76,642	)		$	(86,116	)

Schedule of Components of Provision For Income Taxes

The provision for income taxes consists of the following (in thousands):

		Years Ended December 31,
		2020				2019				2018
Current:
Federal		$	—			$	—			$	—
State			—				—				2
Foreign			360				328				302
Total current			360				328				304
Deferred:
Federal			—				—				—
State			—				—				—
Foreign			—				—				—
Total deferred			—				—				—
Total provision for income taxes		$	360			$	328			$	304

Schedule of Reconciliation Between Statutory Federal Income Tax Rate and Effective Tax Rate

The following is the reconciliation between the statutory federal income tax rate and the Company’s effective tax rate:

	Years Ended December 31,
	2020				2019				2018
Tax at statutory federal rate		21.0	%			21.0	%			21.0	%
State tax		—	%			—	%			—	%
Stock-based compensation expense		2.4	%			6.3	%			14.5	%
Benefit due to intercompany transfer of assets		41.7	%			—	%			—	%
Valuation allowance on intercompany transfer of assets		(41.7	)%			—	%			—	%
Net operating losses not benefitted		(23.2	)%			(2.9	)%			(23.2	)%
Foreign net operating losses not benefitted		0.7	%			(21.7	)%			(11.6	)%
Deduction limitation on executive compensation		(0.8	)%			(2.5	)%			(0.5	)%
Other		(0.3	)%			(0.6	)%			(0.6	)%
Total		(0.2	)%			(0.4	)%			(0.4	)%

Schedule of Significant Components of Deferred Tax Assets

Significant components of the Company’s deferred tax assets are as follows (in thousands):

		December 31,
		2020				2019
Federal and state net operating loss carryforwards		$	134,033			$	91,267
Tax credit carryforwards			62,465				52,243
Foreign net operating loss carryforwards			32,417				37,786
Stock-based compensation			10,399				11,159
Lease obligations			8,243				10,698
Reserves and accruals			5,875				5,353
Deferred revenue			13,550				13,323
Intangible assets			75,915				—
Other			—				284
Subtotal			342,897				222,113
Less: Valuation allowance			(337,824	)			(213,847	)
Net deferred tax assets			5,073				8,266
Fixed assets			(5,073	)			(8,266	)
Other			—				—
Net deferred tax liabilities			(5,073	)			(8,266	)
Total net deferred tax assets		$	—			$	—

Schedule of Reconciliation of the Beginning and Ending Amounts of Unrecognized Income Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized income tax benefits during the three years ended December 31, 2020 is as follows (in thousands):

		Federal and State
Balance as of December 31, 2017		$	23,361
Increase due to prior positions			379
Increase due to current year position			4,216
Balance as of December 31, 2018			27,956
Decrease due to prior positions			(111	)
Increase due to current year position			4,418
Balance as of December 31, 2019			32,263
Decrease due to prior positions			(137	)
Increase due to current year position			16,448
Balance as of December 31, 2020		$	48,574

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