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		6 Months Ended
	Jun. 26, 2020	Jun. 28, 2019	Jun. 26, 2020	Jun. 28, 2019
Earnings Per Share [Abstract]
Weighted-average number of shares outstanding during period	13,605	13,436	13,576	13,408
Common stock equivalents from incremental shares under equity-based compensation plans	677	482	723	443
Number of shares on which diluted earnings per share is based	14,282	13,918	14,299	13,851
Net income	$ 1,759	$ 943	$ 2,903	$ 1,575
Net income per share, basic	$ 0.13	$ 0.07	$ 0.21	$ 0.12
Net income per share, diluted	$ 0.12	$ 0.07	$ 0.20	$ 0.11