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RETIREMENT PLANS (Narrative) (Details) - USD ($) | 12 Months Ended
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Mar. 28, 2020 | Mar. 30, 2019 | Mar. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Benefit obligation, plan funded by company | $ 9,200,000 | $ 9,400,000 |
Reinsurance contracts asset value | 6,300,000 | 6,100,000 |
Accumulated benefit obligation | 27,900,000 | 28,600,000 |
Amount expected to be amortized from accumulated other comprehensive loss in next fiscal year | 300,000 |  |
Subsidiaries |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Company contributions | 600,000 | 600,000 | $ 700,000
Savings Plus Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Company contributions | 4,700,000 | 5,000,000.0 | 5,500,000
401k Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Company contributions | $ 0 | $ 0 | $ 0

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- Definition Defined Benefit Plan, Reinsurance Contracts Asset Value + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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