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Intangible Assets, net (Schedule of Future Amortization Expense) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Intangible Assets, net    
2021 $ 379  
2022 379  
2023 379  
2024 379  
2025 379  
Thereafter 2,745  
Total $ 4,640 $ 5,019