CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (1,538)	$ 3,480
Other comprehensive loss
Unrealized holding loss on available-for-sale securities, net of deferred tax benefit of $242 and $7 for the 13-weeks ended March 27, 2022 and March 28, 2021, respectively	(783)	(22)
Total comprehensive (loss) income	$ (2,321)	$ 3,458