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Intangible Assets (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]      
Amortization expense for intangibles $ 800,000 $ 800,000 $ 0
Intangible assets estimated amortization expense, year one 800,000    
Intangible assets estimated amortization expense, year two 800,000    
Intangible assets estimated amortization expense, year three 800,000    
Intangible assets estimated amortization expense, year four 800,000    
Intangible assets estimated amortization expense, year five $ 800,000