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Real Property Acquisition (Components Of Other Income, Net) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Business Acquisition [Line Items]        
Other income, net $ 275   $ 538  
Building [Member] | Austin, Texas [Member]        
Business Acquisition [Line Items]        
Lease revenue 586 1,160
Property depreciation and amortization (311) (622)
Other income, net $ 275 $ 538