Stock Repurchase and Dividends - Schedule of Dividends Declared and Paid (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended	9 Months Ended
Jun. 01, 2019	May 31, 2019	Feb. 28, 2019	Dec. 14, 2018	Mar. 02, 2018	Dec. 15, 2017	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Stock Repurchase And Dividends [Abstract]
Dividend Paid Per Share (in dollars per share)	$ 0.12	$ 0.15	$ 0.12	$ 0.12	$ 0.10	$ 0.10	$ 0.15	$ 0.12	$ 390.00	$ 0.32
Dividend Paid	$ 6,664	$ 8,219	$ 6,616	$ 6,654	$ 5,583	$ 5,589			$ 21,489	$ 17,836

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=27012166&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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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration