Segment, Geographic, Product and Significant Customer Information - Net Revenue (Details) $ in Thousands	12 Months Ended
	Dec. 26, 2015 USD ($) segment	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | segment	1
Net revenues:
Total net revenues	$ 187,367	$ 166,443	$ 144,307
United States [Member]
Net revenues:
Total net revenues	36,720	36,123	47,019
China [Member]
Net revenues:
Total net revenues	17,373	28,702	13,063
Japan [Member]
Net revenues:
Total net revenues	31,140	15,185	11,629
South Korea [Member]
Net revenues:
Total net revenues	30,572	41,381	34,873
Taiwan [Member]
Net revenues:
Total net revenues	46,715	19,790	9,645
Other [Member]
Net revenues:
Total net revenues	$ 24,847	$ 25,262	$ 28,078