Restructuring (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Restructuring (Textual) [Abstract]
Restructuring charge	$ 1,740,000	$ 0	$ 1,740,000	$ 0
Additional restructuring charge			200,000
Period of additional restructuring charge			0 years 7 months 0 days
Restructuring Reserve [Roll Forward]
Charges	1,740,000	0	1,740,000	0
Employee Severance and Benefits [Member]
Restructuring (Textual) [Abstract]
Restructuring charge	800,000		1,740,000
Restructuring reserve	844,000		844,000
Restructuring Reserve [Roll Forward]
Balance as of December 29, 2012			0
Charges	800,000		1,740,000
Cash Payments			0
Non-cash acceleration of vesting of RSUs			(896,000)
Balance as of September 28, 2013	844,000		844,000
Acceleration of RSUs [Member]
Restructuring (Textual) [Abstract]
Restructuring charge	900,000
Restructuring Reserve [Roll Forward]
Charges	$ 900,000