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Property and Equipment (Narrative) (Details)
12 Months Ended
Dec. 31, 2019
Building | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 12 years
Building | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 50 years
Equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3 years
Equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 25 years