Acquisition (Details) $ in Thousands			3 Months Ended	6 Months Ended
		Oct. 10, 2019 USD ($) Installment	Nov. 01, 2019 USD ($)	Jan. 31, 2020 USD ($) Location State	Aug. 02, 2019 USD ($)	[1]
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Goodwill				$ 6,364	$ 0
Maple Street Biscuit Company [Member]
Acquisition [Abstract]
Ownership interest acquired		100.00%
Cash paid to sellers		$ 32,000
Cash held for satisfaction of indemnification obligations		$ 4,000
Number of installments for unused portion held as security | Installment		2
Amount of first installment payment of unused portion held as security due to principal seller		$ 1,500
Period of first installment payment for unused portion held as security				1 year
Period of remaining installment payment for unused portion held as security				2 years
Number of locations | Location				5
Number of states in which the entity operates | State				7
Goodwill expected to be deductible for income tax purposes			$ 0
Acquisition-related costs			$ 1,269
Fair value of total consideration transferred		36,000
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Financial assets		96
Property and equipment		13,580
Operating lease right-of-use assets, net		14,280
Indefinite-lived intangible asset	[2]	19,460
Other current and noncurrent assets		394
Financial liabilities		(1,876)
Operating lease liabilities		(15,973)
Other noncurrent liabilities		(325)
Total identifiable net assets		29,636
Goodwill		$ 6,364
Maple Street Biscuit Company [Member] | Company-Owned Fast Food Casual Locations [Member]
Acquisition [Abstract]
Number of locations | Location				28

[1] This Condensed Consolidated Balance Sheet has been derived from the audited Consolidated Balance Sheet as of August 2, 2019, as filed with the Securities and Exchange Commission in the Company’s Annual Report on Form 10-K for the fiscal year ended August 2, 2019.

[2] Consists entirely of MSBC’s Tradename