Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2021	Sep. 23, 2020	Sep. 29, 2021	Sep. 23, 2020
Statements of Other Comprehensive Income [Abstract]
Net income	$ 10,161	$ 9,920	$ 22,943	$ 19,019
Unrealized net (losses) gains arising during the period from interest rate swap	(32)	(36)	44	(1,791)
Reclassifications of losses into net income	133	114	367	156
Income tax (expense) benefit	(27)	(20)	(111)	441
Other comprehensive income (loss), net of taxes	74	58	300	(1,194)
Comprehensive income	$ 10,235	$ 9,978	$ 23,243	$ 17,825