Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Numerator:
Net income — basic	$ 11,643	$ 11,566	$ 23,069	$ 22,067
Less: net income attributable to participating shares	48	51	95	97
Net income — diluted	$ 11,595	$ 11,515	$ 22,974	$ 21,970
Denominator:
Weighted average shares outstanding — basic (in shares)	7,263	7,320	7,311	7,473
Effect of dilutive stock options and restricted stock units (in shares)	117	219	131	212
Weighted average shares outstanding — diluted (in shares)	7,380	7,539	7,442	7,685
Basic (in dollars per share)	$ 1.60	$ 1.57	$ 3.15	$ 2.94
Diluted (in dollars per share)	$ 1.57	$ 1.53	$ 3.09	$ 2.86