Summary of Significant Accounting Policies Change in Accounting Principle (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 30, 2020	May 25, 2019	May 30, 2020	May 25, 2019	Nov. 07, 2019	Sep. 01, 2019	Aug. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of goods sold	$ 126,475	$ 82,811	$ 358,129	$ 225,967
Distribution		0		0
General and administrative	28,713	15,947	74,961	41,677
Depreciation and amortization	4,248	1,892	10,988	5,643
New accounting pronouncements
Operating lease, right-of-use asset	26,998		26,998
Operating lease, liability, current	3,566		3,566
Operating lease, liability, noncurrent	24,216		24,216
Finance lease, right-of-use asset	980		980
Finance lease, liability, current	268		268				$ 0
Finance lease, liability, noncurrent	$ 719		$ 719
Change in Accounting Principle and Presentation
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of goods sold		8,607		23,777
Distribution		(6,246)		(17,327)
General and administrative		(2,324)		(6,339)
Depreciation and amortization		(37)		(111)
Other Operating Income (Expense) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of Revenue				0
Cost of goods sold		0
Distribution		0		0
General and administrative		0		22
Depreciation and amortization		0		0
As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of goods sold		74,204		202,190
Distribution		6,246		17,327
General and administrative		18,271		47,994
Depreciation and amortization		$ 1,929		$ 5,754
Other long-term assets
New accounting pronouncements
Operating lease, right-of-use asset					$ 21,100	$ 5,100
Accrued expenses and other current liabilities
New accounting pronouncements
Operating lease, liability, current					2,000	2,000
Other long-term liabilities
New accounting pronouncements
Operating lease, liability, noncurrent					$ 18,900	3,800
Property and equipment
New accounting pronouncements
Finance lease, right-of-use asset						1,200
Current maturities of long-term debt
New accounting pronouncements
Finance lease, liability, current						200
Long-term debt
New accounting pronouncements
Finance lease, liability, noncurrent						$ 1,000