Product and Geographic Information - Net Sales by Geographic Area (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
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 59,647	$ 80,152	$ 105,819	$ 139,121
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	49,439	73,580	88,274	126,034
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	7,110	4,532	10,676	8,706
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 3,098	$ 2,040	$ 6,869	$ 4,381