Property and Equipment, Intangible Assets and Goodwill - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 15, 2017 USD ($)	Mar. 09, 2016 USD ($)	Mar. 14, 2018 USD ($) location	Mar. 15, 2017 USD ($)	Aug. 30, 2017 USD ($)	Aug. 28, 2013 USD ($)	Aug. 25, 2010 USD ($)
Property, Plant and Equipment [Line Items]
Amortization of intangible assets			$ 700	$ 800
Intangible assets amortization expense, 2019			1,400
Intangible assets amortization expense, 2020			1,400
Intangible assets amortization expense, 2021			1,400
Intangible assets amortization expense, 2022			1,400
Intangible assets amortization expense, 2023			1,400
Goodwill, accumulated impairment loss			1,400		$ 1,100
Goodwill			$ 795		$ 1,068
Cheeseburger in Paradise
Property, Plant and Equipment [Line Items]
Goodwill, impairment loss	$ 273	$ 537
Number of restaurants acquired | location			23
Number of restaurants closed for conversion | location			7
Number of restaurants | location			3
Number of restaurants not closed to be converted | location			5
Number of locations subleased | location			4
Number of restaurants closed for disposal | location			4
Fuddruckers
Property, Plant and Equipment [Line Items]
Goodwill, gross							$ 200
Cheeseburger in Paradise
Property, Plant and Equipment [Line Items]
Goodwill, gross						$ 2,000
Fuddruckers Brand Name
Property, Plant and Equipment [Line Items]
Intangible assets, net, estimated useful lives			21 years
Franchise Rights
Property, Plant and Equipment [Line Items]
Intangible assets, net, estimated useful lives			21 years
Intangible Assets Related to Cheeseburger in Paradise
Property, Plant and Equipment [Line Items]
Intangible assets, net, estimated useful lives			15 years