Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Income Statement [Abstract]
Net sales	$ 1,063,452	$ 1,002,387	$ 3,117,141	$ 3,086,910
Cost of sales, including advertising, warehousing and distribution expenses	780,320	728,054	2,285,428	2,255,544
Gross profit on sales	283,132	274,333	831,713	831,366
Operating, general and administrative expenses	244,164	231,527	715,353	695,130
Income from operations	38,968	42,806	116,360	136,236
Investment income (loss) and interest expense	608	1,890	4,360	937
Other income (expense)	(401)	(1,218)	(3,007)	(1,160)
Income before provision for income taxes	39,175	43,478	117,713	136,013
Provision for income taxes	10,668	12,142	31,479	36,516
Net income	$ 28,507	$ 31,336	$ 86,234	$ 99,497
Weighted-average shares outstanding, basic	26,898,443	26,898,443	26,898,443	26,898,443
Weighted-average shares outstanding, diluted	26,898,443	26,898,443	26,898,443	26,898,443
Cash dividends per share	$ 0.31	$ 0.31	$ 0.93	$ 0.93
Basic earnings per share	1.06	1.16	3.21	3.70
Diluted earnings per share	$ 1.06	$ 1.16	$ 3.21	$ 3.70