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Leases (Book Value Of Assets Under Operating Leases From Owned Assets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Property Subject to or Available for Operating Lease [Line Items]    
Gross balance $ 524,085 $ 546,440
Accumulated depreciation (256,527) (259,488)
Operating property, net 267,558 286,952
Building And Improvements [Member]    
Property Subject to or Available for Operating Lease [Line Items]    
Gross balance 126,690 136,749
Accumulated depreciation (21,026) (26,148)
Operating property, net $ 105,664 $ 110,601