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Goodwill and Intangible Assets - (Schedule of Changes in Carrying Amount of Goodwill and Schedule of Intangible Assets) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2020
Dec. 25, 2019
Dec. 26, 2018
Goodwill [Roll Forward]      
Balance, beginning of year $ 36,832 $ 39,781  
Adjustments related to the sale of restaurants 52 (2,949)  
Balance, end of year 36,884 36,832 $ 39,781
Intangible Assets      
Gross carrying amount - trade names 44,087 44,087  
Gross carrying amount - liquor licenses 120 120  
Gross carrying amount - reacquired franchise rights 12,218 15,516  
Accumulated amortization - reacquired franchise rights 4,866 5,767  
Intangible assets 56,425 59,723  
Amortization expense of definite-lived intangible assets and other assets $ 3,000 $ 3,600 $ 4,100
Reacquired Franchise Rights      
Intangible Assets      
Weighted-average life of reacquired franchise rights 8 years