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Lease Commitments (Schedule of minimum rental commitments) (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Lease Commitments [Abstract]  
2019 $ 675
2020 829
2021 662
2022 518
2023 402
Thereafter 1,185
Total lease payments 4,271
Less: imputed interest 858
Present value of lease liabilities $ 3,413