Accumulated Other Comprehensive Income (Loss) - Changes in AOCI by Component (Details) - USD ($) $ in Thousands	3 Months Ended
Nov. 28, 2020	Nov. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 827,466	$ 632,212
Other comprehensive income ("OCI") before reclassifications	0	(80)
Amounts reclassified from AOCI	9	20
Total other comprehensive income (loss)	9	(60)
Ending balance	871,558	785,609
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(526)	(491)
Ending balance	(517)	(551)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(526)	(559)
Other comprehensive income ("OCI") before reclassifications	0	0
Amounts reclassified from AOCI	9	8
Total other comprehensive income (loss)	9	8
Ending balance	$ (517)	(551)
Interest Rate Swap
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		68
Other comprehensive income ("OCI") before reclassifications		(80)
Amounts reclassified from AOCI		12
Total other comprehensive income (loss)		(68)
Ending balance		$ 0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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