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. 27, 2020	Mar. 29, 2019
Earnings Per Share [Abstract]
Weighted-average number of shares outstanding during period	13,547	13,379
Common stock equivalents from incremental shares under equity-based compensation plans	769	403
Number of shares on which diluted earnings per share is based	14,316	13,782
Net income	$ 1,144	$ 632
Net income per share, basic	$ 0.08	$ 0.05
Net income per share, diluted	$ 0.08	$ 0.05