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v3.20.4

Summary of Significant Accounting Policies (Property and equipment) (Details) | 12 Months Ended
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Dec. 31, 2020
Software [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful life | Lesser of 3 years or contractual license term
Equipment, furniture and fixtures [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 2 years
Tooling [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful life | 2 to 4 years
Leasehold improvements [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful life | Lesser of lease term or estimated useful life

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 + Details
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Balance Type: | na
Period Type: | duration

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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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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |