Basic And Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	2,700	3,000
Net income per share - diluted (in dollars per share)	$ (0.04)	$ (0.06)
Net income per share - basic (in dollars per share)	$ (0.04)	$ (0.06)
Denominator:
Basic weighted-average shares outstanding (in shares)	26,798	27,733
Diluted weighted-average shares outstanding (in shares)	26,798	27,733
Numerator:
Net loss	$ (1,154)	$ (1,687)