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Nature Of Business And Significant Accounting Policies (Schedule Of Estimated Useful Lives) (Details) | 12 Months Ended
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Dec. 31, 2019
Autos [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 3 years
Minimum [Member] | Equipment [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 5 years
Minimum [Member] | Furniture And Fixtures [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 3 years
Minimum [Member] | Building [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 7 years
Maximum [Member] | Equipment [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 10 years
Maximum [Member] | Furniture And Fixtures [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 7 years
Maximum [Member] | Building [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 40 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
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
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
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
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_AutomobilesMember
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: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
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: |