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Intangible Assets (Narrative) (Details) - USD ($)
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
Amortization expense, remainder of 2019 $ 42,000  
Amortization expense, 2020 149,000  
Amortization expense, 2021 74,000  
Amortization expense, 2022 19,000  
Amortization expense, 2023 9,000  
Amortization expense, 2024 2,000  
Impairment of intangible assets $ 0 $ 0