Goodwill and Intangible Assets Finite-Lived Intangible Assets (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Dec. 28, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 200,000	$ 200,000	$ 600,000	$ 600,000
Finite-Lived Intangible Assets	7,745,000		7,745,000		7,745,000
Finite-Lived Intangible Assets, Accumulated Amortization	1,910,000		1,910,000		1,281,000
Developed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	5,231,000		5,231,000		5,231,000
Finite-Lived Intangible Assets, Accumulated Amortization	1,220,000		1,220,000		850,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	2,413,000		2,413,000		2,413,000
Finite-Lived Intangible Assets, Accumulated Amortization	589,000		589,000		330,000
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets	101,000		101,000		101,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 101,000		$ 101,000		$ 101,000