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Restructuring (Details Textual) (USD $)	3 Months Ended	12 Months Ended
Restructuring (Details Textual) (USD $)	Sep. 28, 2013	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Restructuring (Textual) [Abstract]
Restructuring charge	$ 1,740,000	$ 1,740,000	$ 0	$ 0
Additional restructuring charge		200,000
Period of additional restructuring charge		5 months
Employee Severance and Benefits [Member]
Restructuring (Textual) [Abstract]
Restructuring charge	800,000	1,740,000
Acceleration of RSUs [Member]
Restructuring (Textual) [Abstract]
Restructuring charge	$ 900,000

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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