Segment Information (Schedule of Segment Revenue from Product Lines) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 24, 2016	Sep. 26, 2015	Sep. 24, 2016	Sep. 26, 2015
Segment Reporting Information [Line Items]
Net sales	$ 428,619	$ 306,756	$ 688,047	$ 589,389
Portable Audio Products [Member]
Segment Reporting Information [Line Items]
Net sales	383,410	257,152	599,478	493,018
Non-Portable Audio and Other Products [Member]
Segment Reporting Information [Line Items]
Net sales	$ 45,209	$ 49,604	$ 88,569	$ 96,371

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.

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=26872669&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration