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Computation of Basic and Diluted Net Income Per Common Share (Details Textual) (Stock option)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Stock option
Computation of Basic and Diluted Net Income Per Common Share (Textual) [Abstract]
Stock options to purchase shares excluded from the computation of diluted weighted average shares outstanding	123,393	539,230	91,448	574,656

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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