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Intangible Assets (Narrative) (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Order backlog not yet recognized $ 24,800,000
Amortization expense, remainder of 2020 126,000
Amortization expense, 2021 100,000
Amortization expense, 2022 43,000
Amortization expense, 2023 9,000
Amortization expense, 2024 2,000
Impairment of intangible assets $ 0