Stock Repurchase and Dividends - Schedule of Dividends Declared and Paid (Details) - USD ($) $ / shares in Units, $ in Thousands									12 Months Ended
Sep. 04, 2020	May 29, 2020	Feb. 28, 2020	Dec. 13, 2019	Aug. 30, 2019	May 31, 2019	Feb. 28, 2019	Dec. 14, 2018	Sep. 27, 2020	Sep. 29, 2019	Sep. 30, 2018
Stock Repurchase And Dividends [Abstract]
Dividend paid per share (in dollars per share)	$ 0.17	$ 0.17	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.12	$ 0.12	$ 0.64	$ 0.54	$ 0.44
Dividends paid	$ 9,153	$ 9,175	$ 8,225	$ 8,190	$ 8,185	$ 8,219	$ 6,616	$ 6,654	$ 34,743	$ 29,674

Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

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Balance Type:	debit
Period Type:	duration