Net Income (Loss) Per Share (Details)	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
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	23,939,000	23,138,000	23,825,000	23,240,000
Dilutive common stock equivalents, using treasury stock method (in shares)	281,000	0	392,000	0
Shares used in diluted net income (loss) per share computation	24,220,000	23,138,000	24,217,000	23,240,000
Antidilutive securities excluded from computation of earnings per share		400,000		400,000