Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Cash flows from operating activities:
Net income	$ 125,196	$ 108,849	$ 118,917
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	104,026	102,804	99,370
(Gain) loss on disposition of fixed assets	(2,407)	1,026	3,914
Unrealized (gain) loss in value of equity securities	1,325	900	1,791
Deferred income taxes	(852)	12,313	5,657
Unrealized (gain) loss in SERP	5,653	(2,309)	(2,641)
Changes in operating assets and liabilities:
Inventories	(23,687)	(563)	10,782
Accounts receivable and prepaid expenses	2,436	2,727	(6,804)
Accounts payable and other liabilities	7,695	174	54,658
Income taxes	(1,005)	2,302	(3,139)
Other	(356)	(514)	(4,515)
Net cash provided by operating activities	218,024	227,709	277,990
Cash flows from investing activities:
Purchase of property and equipment	(122,169)	(151,800)	(130,991)
Proceeds from the sale of property and equipment	6,691	5,932	470
Purchase of marketable securities	(355,757)	(116,268)	(50,789)
Proceeds from the sale and maturities of marketable securities	362,237	19,680	7,730
Purchase of intangible assets	(819)	(208)	(127)
Change in SERP investment	(1,290)	(1,986)	(1,188)
Net cash used in investing activities	(111,107)	(244,650)	(174,895)
Cash flows from financing activities:
Dividends paid	(34,968)	(33,623)	(33,354)
Net cash used in financing activities	(34,968)	(33,623)	(33,354)
Net increase (decrease) in cash and cash equivalents	71,949	(50,564)	69,741
Cash and cash equivalents at beginning of year	86,048	136,612	66,871
Cash and cash equivalents at end of period	$ 157,997	$ 86,048	$ 136,612