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Retirement Plan - Changes in Projected Benefit Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 25, 2020	Jun. 27, 2019	Jun. 28, 2018
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of year	$ 25,382	$ 21,934
Service cost	712	610	$ 607
Interest cost	892	895	851
Actuarial loss	5,872	2,597	(511)
Benefits paid	(654)	(654)
Projected benefit obligation at end of year	$ 32,204	$ 25,382	$ 21,934

X

- 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

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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