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Retirement Plan - Components of Actuarial Loss Portion of Change in Projected Benefit Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 24, 2021	Jun. 25, 2020	Jun. 27, 2019
Schedule Of Actuarial Loss In Projected Benefit Obligation [Abstract]
Change in assumed pay increases	$ 3,319	$ 2,352	$ 293
Change in discount rate	(1,134)	4,285	2,174
Change in mortality assumptions	(329)	(1,083)	(69)
Other	339	318	199
Actuarial loss	$ 2,195	$ 5,872	$ 2,597

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- Definition

Actuarial gain loss other.

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- Definition

Change In Assumed Pay Increases Impacting Actuarial Gain Loss

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- Definition

Change In Discount Rate Impacting Actuarial Gain Loss

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- Definition

Change in mortality assumption impacting actuarial gain (loss).

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- Definition

Schedule of actuarial gain loss in projected benefit obligation.

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- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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