Debt - Schedule of Debt (Details) - USD ($)	Jun. 03, 2023	Sep. 03, 2022	Jul. 31, 2016
Debt Instrument [Line Items]
Long-Term Note Payable	$ 4,750,000	$ 4,750,000
Financing arrangements	265,000	88,000
Obligations under finance leases	402,000	1,180,000
Less: unamortized debt issuance costs	(1,119,000)	(1,426,000)
Total debt, including obligations under finance leases	464,298,000	794,592,000
Less: current portion	(290,281,000)	(325,680,000)
Long-term debt including obligations under finance leases	174,017,000	468,912,000
Finance lease, liability, current	376,000	996,000
Unamortized debt issuance costs, current	360,000	404,000
Financing obligations, current		88,000
Committed Bank Facility
Debt Instrument [Line Items]
Credit facility	0	245,000,000
Uncommitted Bank Facilities
Debt Instrument [Line Items]
Short-term debt	165,000,000	200,000,000
Senior Notes Series A | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 75,000,000	$ 75,000,000
Interest rate	2.65%	2.65%	2.65%
Long-term debt, current maturities	$ 75,000
Financing obligations, current		$ 75,000
Senior Notes Series B | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 100,000,000	100,000,000
Interest rate	2.90%		2.90%
Senior Notes Due June 11, 2025 | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 20,000,000	20,000,000
Interest rate	3.79%		3.79%
Senior notes, Due March 5, 2027 | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 50,000,000	50,000,000
Interest rate	2.60%		2.60%
Senior notes due January 12, 2023 | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 0	$ 50,000,000
Interest rate	3.04%	3.04%
Financing obligations, current		$ 50,000,000
Series 2019A notes, due March 5, 2024 | Private Placement Debt
Debt Instrument [Line Items]
Principal amount	$ 50,000,000	$ 50,000,000
Interest rate	2.40%	2.40%
Financing obligations, current		$ 50,000