Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 24, 2022
Cash flows from operating activities:
Net income	$ 83,305	$ 96,313
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	81,533	77,604
(Gain) loss on disposition of fixed assets	5	(2,481)
Unrealized (gain) loss in value of equity securities	815	1,590
Deferred income taxes	4,476	(1,711)
Unrealized (gain) loss in SERP	(1,222)	6,082
Changes in operating assets and liabilities:
Inventories	(10,450)	(30,499)
Accounts receivable and prepaid expenses	(26,342)	(3,689)
Accounts payable and other liabilities	(89,437)	(9,802)
Income taxes	81	9,248
Other	359	(344)
Net cash provided by operating activities	43,125	142,311
Cash flows from investing activities:
Purchase of property and equipment	(75,645)	(83,335)
Proceeds from the sale of property and equipment	336	6,710
Purchase of marketable securities	(92,569)	(267,106)
Proceeds from the sale and maturities of marketable securities	58,725	287,124
Purchase of intangible assets	(29)	(944)
Proceeds from sale of intangible assets		125
Change in SERP investment	(213)	(507)
Net cash used in investing activities	(109,394)	(57,933)
Cash flows from financing activities:
Dividends paid	(27,436)	(25,823)
Net cash used in financing activities	(27,436)	(25,823)
Net increase (decrease) in cash and cash equivalents	(93,706)	58,555
Cash and cash equivalents at beginning of year	157,997	86,048
Cash and cash equivalents at end of period	$ 64,291	$ 144,603