Earnings Per Share - Computation of Basic and Diluted Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 29, 2021	Dec. 30, 2020	Dec. 25, 2019
Numerator:
Net income	$ 29,121	$ 24,474	$ 24,900
Denominator:
Weighted-average shares outstanding-Basic (shares)	35,973,892	35,193,325	36,739,209
Weighted-average shares outstanding-Diluted (shares)	36,446,756	35,796,406	37,441,503
Net income per share-Basic (usd per share)	$ 0.81	$ 0.70	$ 0.68
Net income per share-Diluted (usd per share)	$ 0.80	$ 0.68	$ 0.67
Anti-dilutive securities not considered in diluted EPS calculation (shares)	136,397	81,041	526,295