Commitments and Contingencies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase obligation	$ 701
Total rent expense, net of sublease income	947	493	464
Wafer purchase commitment [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Outstanding commitment for purchases	$ 10,800	$ 621