Reportable Segments - Segment Assets (Details) $ in Thousands	Aug. 26, 2020 USD ($)
Total assets:
Total	$ 177,403
Finite-lived intangible assets	29,642
Fuddruckers franchise operations | Fuddruckers Brand Name
Total assets:
Finite-lived intangible assets	6,900
Fuddruckers franchise operations | Royalty Intangibles
Total assets:
Finite-lived intangible assets	8,400
Company-owned restaurants | Fuddruckers Trade Name Cheeseburger In Paradise Liquor Licenses And Jimmy Buffet Intangibles
Total assets:
Finite-lived intangible assets	34
Operating Segments | Luby's cafeterias
Total assets:
Total	90,349
Operating Segments | Fuddruckers restaurants
Total assets:
Total	26,502
Operating Segments | Cheeseburger in Paradise restaurants
Total assets:
Total	164
Operating Segments | Culinary contract services
Total assets:
Total	4,744
Operating Segments | Fuddruckers franchise operations
Total assets:
Total	8,973
Corporate
Total assets:
Total	$ 46,671