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Acquisitions (Schedule Of Amortization Of Reacquired Franchise Agreements) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Reacquired Franchise Rights [Member]        
Business Acquisition [Line Items]        
Amortization of reacquired franchise agreements $ 2,352 $ 331 $ 4,704 $ 772