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v3.20.4

Summary of Significant Accounting Policies (Estimated Useful Lives of Property, Plant and Equipment) (Details) | 12 Months Ended
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Dec. 31, 2020
Buildings and Improvements [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 10 years
Buildings and Improvements [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 40 years
Machinery and Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Machinery and Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 10 years
Office Furniture and Fixtures [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Office Furniture and Fixtures [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 10 years
Tooling [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 2 years
Tooling [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Information Technology [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Information Technology [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Vehicles [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Vehicles [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 7 years
Leasehold Improvements [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 3 years
Leasehold Improvements [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Property, plant and equipment, useful life | 10 years

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

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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. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ToolsDiesAndMoldsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TechnologyEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |