Product and Geographic Information - Net Sales by Product Type (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Mar. 30, 2013	Mar. 31, 2012	Apr. 02, 2011
Product Information
Net sales	$ 39,574	$ 37,930	$ 80,152	$ 58,969	$ 45,492	$ 49,807	$ 81,884	$ 77,046	$ 216,625	$ 254,229	$ 256,811
Interconnect Microfabrication Group
Product Information
Net sales									170,360	166,477	123,888
Components Group
Product Information
Net sales									27,511	28,976	54,184
Semiconductor Group
Product Information
Net sales									$ 18,754	$ 58,776	$ 78,739