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Real Property Acquisition (Components Of Other Income, Net) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Business Acquisition [Line Items] |  |
Other income, net | $ 263 |
Building [Member] | Austin, Texas [Member] |  |
Business Acquisition [Line Items] |  |
Lease revenue | 573 |
Property depreciation and amortization | (310) |
Other income, net | $ 263 |

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