Balance Sheet Components - Property and Equipment) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Property and Equipment [Abstract]
Less: Accumulated depreciation	$ (21,305)	$ (20,284)
Property and equipment, net	11,717	11,902
Computer hardware
Property and Equipment [Abstract]
Property and equipment	$ 16,092	15,640
Useful life	3 years
Software
Property and Equipment [Abstract]
Property and equipment	$ 5,341	5,342
Furniture and fixtures
Property and Equipment [Abstract]
Property and equipment	$ 4,506	4,597
Useful life	5 years
Leasehold improvements
Property and Equipment [Abstract]
Property and equipment	$ 7,083	$ 6,607
Useful life	5 years
Minimum \| Software
Property and Equipment [Abstract]
Useful life	1 year
Maximum \| Software
Property and Equipment [Abstract]
Useful life	7 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
-Section 50
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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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- References

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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