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Intangible Assets (Schedule of future amortization expense for amortizable intangible assets) (Details)
$ in Thousands
Mar. 31, 2020
USD ($)
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
2020 $ 31
2021 42
2022 42
2023 42
2024 42
Thereafter 31
Total $ 230