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Description of Business and Summary of Significant Accounting Policies, Other Income, net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Other Income, net [Abstract]      
Gain on sale and leaseback transaction $ 31,600    
Gains (losses) on sale of former retail locations and other operating assets $ 3,500 $ (425)