Postretirement Health Care and Life Insurance Benefits (Details 2) - Postretirement Benefit Plans [Member] - USD ($) $ in Thousands	12 Months Ended
Mar. 30, 2019	Mar. 31, 2018	Apr. 01, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 47	$ 33	$ 41
Interest cost	91	98	102
Prior service cost amortization	3	3	3
Amount of loss recognized	(25)	(4)	26
Net periodic benefit cost	$ 116	$ 130	$ 172

Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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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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