Nature of Operations and Significant Accounting Policies - Schedule of Impact of Accounting Standards Update Adoption (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 28, 2019	Aug. 29, 2018	Aug. 26, 2020	Aug. 29, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounting standards update	us-gaap:AccountingStandardsUpdate201602Member	us-gaap:AccountingStandardsUpdate201409Member
ASSETS
Trade accounts and other receivables, net	$ 8,852		$ 6,092	$ 8,922
Prepaid and other assets	2,355			2,130
Total Current Assets	27,395			27,240
Intangible assets, net	16,781		15,343	16,591
Operating lease right-of-use assets			16,756	27,191
Total Assets	186,000		177,403	212,846
LIABILITIES
Operating lease liabilities - current			3,903	8,061
Accrued expenses and other liabilities	24,475		19,569	23,473
Total Current Liabilities	32,954		30,259	40,013
Operating lease liabilities - non-current			17,797	24,360
Other liabilities	6,577		1,630	977
Total Liabilities	84,970		103,804	110,789
SHAREHOLDERS’ EQUITY
Retained earnings	61,182		32,759	62,209
Total Shareholders' Equity	101,030	$ 112,628	73,599	102,057
Total Liabilities and Shareholders' Equity	186,000		$ 177,403	212,846
Cumulative Effect, Period of Adoption, Adjustment
SHAREHOLDERS’ EQUITY
Total Shareholders' Equity	$ 1,027	$ 2,479
Accounting Standards Update 2016-02 | Cumulative Effect, Period of Adoption, Adjustment
ASSETS
Trade accounts and other receivables, net				70
Prepaid and other assets				(225)
Total Current Assets				(155)
Intangible assets, net				(190)
Operating lease right-of-use assets				27,191
Total Assets				26,846
LIABILITIES
Operating lease liabilities - current				8,061
Accrued expenses and other liabilities				(1,002)
Total Current Liabilities				7,059
Operating lease liabilities - non-current				24,360
Other liabilities				(5,600)
Total Liabilities				25,819
SHAREHOLDERS’ EQUITY
Retained earnings				1,027
Total Shareholders' Equity				1,027
Total Liabilities and Shareholders' Equity				$ 26,846