Product and Geographic Information - Net Sales by Product Type (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Product Information
Net sales	$ 37,571	$ 43,661	$ 42,856	$ 35,030	$ 37,081	$ 38,267	$ 59,647	$ 46,172	$ 159,118	$ 181,167	$ 216,625
Interconnect Microfabrication Group
Product Information
Net sales									101,433	120,947	170,360
Semiconductor Group
Product Information
Net sales									38,586	35,779	18,754
Components Group
Product Information
Net sales									$ 19,099	$ 24,441	$ 27,511