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Goodwill and Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill and Schedule of Intanbiels Assets) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 25, 2019
Dec. 26, 2018
Dec. 27, 2017
Goodwill [Roll Forward]      
Balance, end of year $ 39,781 $ 38,269  
Additions related to acquisitions 0 1,574 $ 3,022
Adjustments related to the sale of restaurants (2,949) (62)  
Balance, end of year 36,832 39,781 38,269
Intangible Assets      
Gross Carring Amount - Trade names 44,087 44,087  
Gross Carring Amount - Liquor licenses 120 166  
Gross Carring Amount - Intangible assets with definite lives 15,516 19,933  
Accumulated Amortization - Intangible assets with definite lives 5,767 5,119  
Intangible assets 59,723 64,186  
Amortization expense of definite-lived intangible assets and other assets $ 3,600 $ 4,100 $ 2,500
Reacquired Franchise Rights      
Intangible Assets      
Weighted-average life of reacquired franchise rights 8 years