v3.19.3.a.u2

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Loss Before Provision For (Benefit From) Income Taxes

Loss before (benefit from) provision for income taxes for the years ended December 31, 2019, 2018 and 2017 consist of the following (in thousands):

	Years Ended December 31,
	2019				2018				2017
United States	$	(508,595	)		$	(380,473	)		$	(247,784	)
Foreign	(6,121		)		(3,935		)		(8,212		)
Loss before (benefit from) provision for income taxes	$	(514,716	)		$	(384,408	)		$	(255,996	)

Provision For (Benefit From) Income Taxes

The (benefit from) provision for income taxes for the years ended December 31, 2019, 2018 and 2017 consist of the following components (in thousands):

	Years Ended December 31,
	2019				2018				2017
Current:
Federal	$	—			$	(26	)		$	(252	)
State	505				352				172
Total current	505				326				(80		)
Deferred:
Federal	(1,200		)		—				—
Total deferred	(1,200		)		—				—
Total (benefit from) provision for income taxes	$	(695	)		$	326			$	(80	)

Reconciliation of U.S. Statutory Income Tax Rate to Effective Tax Rate

The reconciliation of the U.S. statutory income tax rate to our effective tax rate for the years ended December 31, 2019, 2018 and 2017 are as follows:

	Years Ended December 31,
	2019			2018			2017
Tax effected at statutory rate	21.0	%		21.0	%		34.0	%
State taxes, net of federal benefit	7.9	%		6.3	%		8.5	%
Non-deductible items	1.6	%		0.0	%		(1.3	)%
Change in valuation allowance	(33.0	)%		(28.5	)%		(20.4	)%
Federal research and development credits	2.5	%		1.5	%		4.8	%
Foreign tax rate differential	(0.2	)%		(0.2	)%		(1.1	)%
Impact of federal rate change on net deferred taxes	0.0	%		0.0	%		(25.0	)%
Other	0.2	%		(0.2	)%		0.5	%
Effective tax rate	0.0	%		(0.1	)%		0.0	%

Significant Components of Deferred Tax Assets and Tax Liabilities

The significant components of our deferred tax assets and tax liabilities as of December 31, 2019 and 2018 are as follows (in thousands):

	December 31,
	2019				2018
Deferred tax assets:
Net operating loss carry-forwards	$	268,173			$	114,932
Stock-based compensation	43,978				33,138
Capitalized licenses, R&D and start-up costs	19,891				22,143
Tax credit carry-forwards	77,222				53,617
Accrued expenses	7,377				16,443
Deferred revenue	53,475				71,209
Operating lease liabilities	26,571				—
Lease financing obligation	10,570				9,149
Other	11				2,870
Total gross deferred tax assets	507,268				323,501
Less: valuation allowance	(470,753		)		(308,273		)
Total deferred tax assets, net of valuation allowance	36,515				15,228
Deferred tax liabilities:
Financing right-of-use assets	(2,612		)		—
Operating right-of-use assets	(24,944		)		—
Fixed assets	(8,959		)		(15,228		)
Total deferred tax liabilities	(36,515		)		(15,228		)
Net deferred tax assets	$	—			$	—

Reconciliation of the Beginning and Ending Amounts of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amounts of unrecognized tax benefits during the years ended December 31, 2019 and 2018 are as follows (in thousands):

Balance as of December 31, 2017	$	940
Decrease due to prior positions	(799		)
Increase due to current year tax position	—
Balance as of December 31, 2018	141
Decrease due to prior positions	—
Increase due to current year tax positions	—
Balance as of December 31, 2019	$	141

X

- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

+ Details

Name:	us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

+ Details

Name:	us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

+ Details

Name:	us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the change in unrecognized tax benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 55
-Paragraph 217
-URI http://asc.fasb.org/extlink&oid=117331294&loc=d3e36027-109320

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

+ Details

Name:	us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration