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Intangible Assets (Narrative) (Details)
$ in Thousands
Sep. 30, 2020
USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Order backlog not yet recognized $ 17,700
Amortization expense, remainder of 2020 48,000
Amortization expense, 2021 133,000
Amortization expense, 2022 75,000
Amortization expense, 2023 28,000
Amortization expense, 2024 $ 2,000