Lawsuits filed against company.

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The number of claims settled and dismissed during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

+ Details

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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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Commitment and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Lawsuit	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Long Term Purchase Commitment [Line Items]
Lease payments	$ 0.2	$ 0.2	$ 0.6	$ 0.5
Lawsuits Filed Against Company \| Lawsuit			5
Litigation settlement expense			$ 0.2
Maximum
Long Term Purchase Commitment [Line Items]
Lawsuits Filed Against Company \| Lawsuit			7
Putative Class [Member]
Long Term Purchase Commitment [Line Items]
Number of settled and dismissed lawsuits \| Lawsuit			8
Menlo Park Lease Agreement [Member]
Long Term Purchase Commitment [Line Items]
Letters of Credit issued amount	0.2		$ 0.2
Redwood City Lease Agreement [Member]
Long Term Purchase Commitment [Line Items]
Letters of Credit issued amount					$ 4.1
Boston, Massachusetts [Member]
Long Term Purchase Commitment [Line Items]
Letters of Credit issued amount	$ 0.2		$ 0.2