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Commitments and Contingencies (Schedule of future minimum rental commitments under the terms of these lease) (Details) - Building [Member]
$ in Thousands
Sep. 30, 2019
USD ($)
Operating Leased Assets [Line Items]  
2019 $ 149
2020 627
2021 633
2022 578
2023 555
2024 and beyond 563
Total $ 3,105