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Sale of Company-Owned Stores - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 16, 2019
USD ($)
Store
Jun. 16, 2019
USD ($)
Store
Number of company-owned stores sold | Store 59 59
Consideration For Sale Of Stores $ 9.7  
Proceeds from sale of assets 8.1  
Short-term notes receivable $ 1.6 $ 1.6
Pre-tax loss on sale of assets, net of goodwill reduction, charged to general and administrative expenses   2.4
Reduction of goodwill related to sale of stores   $ 1.4