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Postretirement Benefit Plans (Schedule of Net Periodic Pension Expense) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 29, 2018 | Mar. 30, 2019 | Mar. 31, 2018 | Mar. 25, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Interest cost |  | $ 0 | $ 651 |
Settlement loss | $ 13,800 | 13,768 | 0 | $ 0
Research and development |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expenses |  | 0 | 0 | 0
Interest cost |  | 0 | 651 | 759
Expected return on plan assets |  | 0 | (1,159) | (1,126)
Settlement loss |  | 0 | 0 | 1,063
Amortization of actuarial gain |  | 0 | 0 | (89)
Net periodic pension expense (income) |  | $ 0 | $ (508) | $ 607

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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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