Reportable Segments - Segment Assets (Details) - USD ($) $ in Thousands	4 Months Ended
	Dec. 19, 2018	Dec. 20, 2017	Aug. 29, 2018
ASSETS
Total assets	$ 208,891		$ 199,989
Revenue	102,918	$ 113,497
Finite-lived intangible assets	29,907		29,907
Company-owned restaurants
ASSETS
Revenue	91,198	104,726
Culinary contract services
ASSETS
Revenue	9,496	6,884
Franchise operations
ASSETS
Revenue	2,224	1,887
Operating Segments | Company-owned restaurants
ASSETS
Total assets	156,314		151,511
Operating Segments | Company-owned restaurants | Fuddruckers Trade Name Cheeseburger In Paradise Liquor Licenses And Jimmy Buffet Intangibles
ASSETS
Finite-lived intangible assets	8,100		8,600
Operating Segments | Culinary contract services
ASSETS
Total assets	4,100		4,569
Operating Segments | Franchise operations
ASSETS
Total assets	10,993		10,982
Operating Segments | Franchise operations | Royalty Intangibles
ASSETS
Finite-lived intangible assets	9,700		10,100
Corporate
ASSETS
Total assets	37,484		$ 32,927
Vending revenue
ASSETS
Revenue	$ 99	$ 143