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Nature of Operations and Summary of Significant Accounting Policies (Schedule Of Amortizable Classification Of Intangible Assets) (Details)
12 Months Ended
Dec. 31, 2020
Home Plans [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of intangible assets 7 years
Minimum [Member] | Non-Compete Agreements [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of intangible assets 2 years
Maximum [Member] | Non-Compete Agreements [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of intangible assets 5 years