Net Income (Loss) Per Share (Details)	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Reconciliation of the basic and diluted net income per share computations
Weighted average common shares outstanding used in basic net income (loss) per share calculation	23,958,000	23,290,000	23,358,000
Potential dilutive common stock equivalents, using treasury stock method	0	0	487,000
Weighted average shares used in diluted net income (loss) per share calculation	23,958,000	23,290,000	23,845,000
Net Income Per Share (Textual) [Abstract]
Potential common stock equivalents, anti-dilutive, excluded from calculation of earnings per share	400,000	400,000
Weighted average common share equivalents consisting of stock options included in the calculation of diluted net income per share	0	0	487,000