Segment Information (Tables)

12 Months Ended

Mar. 29, 2014

Segment Information [Abstract]

Schedule of Segment Revenue from Product Lines

	Fiscal Years Ended
	March 29,		March 30,		March 31,
	2014		2013		2012
Audio Products	$	667,739	$	754,769	$	350,743
Energy Products		46,599		55,017		76,100
	$	714,338	$	809,786	$	426,843

Schedule of Sales by Geographic Location Based on the Sales Office Location

	Fiscal Years Ended
	March 29,		March 30,		March 31,
	2014		2013		2012
United States	$	35,582	$	38,670	$	50,230
European Union		13,125		17,601		23,493
United Kingdom		1,513		1,610		434
China		617,850		700,051		294,143
Hong Kong		6,057		8,590		8,671
Japan		5,150		9,299		15,196
South Korea		9,338		8,975		9,781
Taiwan		13,739		11,694		10,662
Other Asia		11,112		10,387		13,063
Other non-U.S. countries		872		2,909		1,170
Total consolidated sales	$	714,338	$	809,786	$	426,843

Schedule of Property, Plant, and Equipment, Net, by Geographic Location

	Fiscal Years Ended
	March 29,		March 30,
	2014		2013
United States	$	103,287	$	100,343
United Kingdom		16		23
China		265		137
Hong Kong		2		5
Japan		12		25
South Korea		5		6
Taiwan		52		70
Other Asia		11		14
Total consolidated property, plant and equipment, net	$	103,650	$	100,623