Product and Geographic Information - Net Sales by Product Type (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Product Information
Net sales	$ 59,647	$ 80,152	$ 105,819	$ 139,121
Interconnect Microfabrication Group
Product Information
Net sales	38,301	69,137	72,718	116,969
Components Group
Product Information
Net sales	10,935	3,184	16,548	6,616
Semiconductor Group
Product Information
Net sales	$ 10,411	$ 7,831	$ 16,553	$ 15,536