Supplemental Cash Flow Information - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 26, 2021	Sep. 27, 2020	Jun. 27, 2021	Jun. 28, 2020
Supplemental Cash Flow Information [Abstract]
Income tax payment related to recovery of non-income taxes	$ 2,125
Capital expenditures incurred but not yet paid	1,524	$ 800	$ 2,080	$ 630
Non cash activity relating to finance leases	$ 0	$ 878

Future cash outflow to pay for purchases of fixed assets that have occurred.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration