Product and Geographic Information - Net Sales by Product Type (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Product Information
Net sales	$ 42,856	$ 59,647	$ 59,647	$ 77,886	$ 105,819	$ 105,819
Interconnect Microfabrication Group
Product Information
Net sales	26,600	38,301		47,548	72,718
Components Group
Product Information
Net sales	9,767	10,935		20,516	16,548
Semiconductor Group
Product Information
Net sales	$ 6,489	$ 10,411		$ 9,822	$ 16,553