Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Mar. 31, 2012
Net sales	$ 16,059	$ 18,058
Property, plant and equipment, net	4,674		4,941
UNITED STATES
Net sales	5,379	6,181
Property, plant and equipment, net	3,836		4,019
CHINA
Net sales	3,838	4,935
SINGAPORE
Net sales	2,012	2,592
Asia Excluding China And Singapore [Member]
Net sales	2,927	2,532
Europe [Member]
Net sales	1,743	1,708
Other Country [Member]
Net sales	160	110
HONG KONG
Property, plant and equipment, net	$ 838		$ 922