Segment Information (Tables)

6 Months Ended

Sep. 24, 2011

Segment Information [Abstract]

Schedule Of Segment Revenue From Product Lines

	Three Months Ended		Six Months Ended
	September 24,	September 25,	September 24,	September 25,
	2011	2010	2011	2010
Audio Products	$           83,683	$           71,171	$         154,802	$         125,159
Energy Products	17,919	29,427	39,042	57,354
	$         101,602	$         100,598	$         193,844	$         182,513