Goodwill and Intangible Assets Finite-Lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Jan. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	$ 7,745	$ 7,745
Finite-Lived Intangible Assets, Accumulated Amortization	2,327	2,118
Developed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	5,231	5,231
Finite-Lived Intangible Assets, Accumulated Amortization	1,465	1,342
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	2,413	2,413
Finite-Lived Intangible Assets, Accumulated Amortization	761	675
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	101	101
Finite-Lived Intangible Assets, Accumulated Amortization	$ 101	$ 101