| **Commitments And Contingencies (Schedule Of Future Annual Minimum Lease Payments) (Details) - Motor Vehicles, Buildings And Other Equipment [Member] $ in Thousands** | Dec. 31, 2018 USD ($) |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------|
| **Operating Leased Assets [Line Items]**                                                                                                                               |                  |
| 2019                                                                                                                                                                   | $ 1,557               |
| 2020                                                                                                                                                                   | 1,018                 |
| 2021                                                                                                                                                                   | 779                   |
| 2022                                                                                                                                                                   | 557                   |
| 2023                                                                                                                                                                   | 184                   |
| Thereafter                                                                                                                                                             | $ 137                 |

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| - Definition
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
+ References
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| - Definition
Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| X                                                                                                                                                                                     |
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