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Segment Information (Schedule of Segment Revenue from Product Lines) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 30, 2017 | Sep. 23, 2017 | Jun. 24, 2017 | Mar. 25, 2017 | Dec. 24, 2016 | Sep. 24, 2016 | Jun. 25, 2016 | Mar. 31, 2018 | Mar. 25, 2017 | Mar. 26, 2016
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 303,173 | $ 482,741 | $ 425,537 | $ 320,735 | $ 327,864 | $ 523,029 | $ 428,619 | $ 259,428 | $ 1,532,186 | $ 1,538,940 | $ 1,169,251
Portable Audio Products |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,363,876 | 1,373,848 | 989,101
Non-Portable Audio and Other Products |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 168,310 | $ 165,092 | $ 180,150

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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