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Impairment of Long-Lived Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Jan. 01, 2017
Jan. 03, 2016
Impairment Or Disposal Of Tangible Assets Disclosure [Abstract]        
Impairment of store assets $ 600 $ 602 $ 0 $ 192