Net Income Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Earnings Per Share [Abstract]
Weighted-average number of shares outstanding during period	13,379	14,687
Common stock equivalents from incremental shares under equity-based compensation plans	403	611
Number of shares on which diluted earnings per share is based	13,782	15,298
Net income	$ 632	$ 414
Net income per share, basic	$ 0.05	$ 0.03
Net income per share, diluted	$ 0.05	$ 0.03