Reportable Segments - Narrative (Details)	4 Months Ended
	Dec. 19, 2018 manager contract segment restaurant	Jan. 31, 2019 restaurant	Aug. 29, 2018 contract restaurant
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Company-owned restaurants
Segment Reporting Information [Line Items]
Number of reportable segments | segment	1
Number of restaurants	140		146
Culinary contract services
Segment Reporting Information [Line Items]
Number of CCS locations | contract	30		28
Franchise operations
Segment Reporting Information [Line Items]
Number of restaurants	103		105
Franchise term	20 years
Minimum number of managers to successfully complete training | manager	3
Subsequent Event | Licensee
Segment Reporting Information [Line Items]
Number of restaurants		33