Segment Information (Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2013 segment	Jun. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 16,198	$ 16,059
Number of Reportable Segments	1
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,003	3,838
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	4,955	5,379
Asia (Excluding China And Singapore) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,299	2,927
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,157	2,012
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,758	1,743
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 26	$ 160