Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Cash flows from operating activities:
Net income	$ 67,983	$ 62,738	$ 98,414
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	93,706	93,567	85,415
(Gain) Loss on disposition of fixed assets	782	1,274	(700)
Impairment of fixed assets	0	1,532	0
(Gain) Loss on sale of marketable securities	(51)	54	40
Unrealized (gain) loss in value of equity securities	(1,975)	1,606	0
Deferred income taxes	5,765	3,418	(31,993)
Unrealized (gain) loss in SERP	(135)	1,883	(1,114)
Changes in operating assets and liabilities:
Inventories	950	(1,247)	(2,726)
Accounts receivable and prepaid expenses	2,431	(5,874)	4,045
Accounts payable and other liabilities	(505)	(18,583)	7,742
Income taxes	913	9,330	(422)
Other	1,822	565	446
Net cash provided by operating activities	171,686	150,263	159,147
Cash flows from investing activities:
Purchase of property and equipment	(101,456)	(95,696)	(95,857)
Proceeds from the sale of property and equipment	4,245	1,734	2,246
Purchase of marketable securities	(13,620)	(5,627)	(12,612)
Proceeds from maturities of marketable securities	5,985	6,550	8,442
Proceeds from the sale of marketable securities	1,180	5,834	7,272
Purchase of intangible assets	(1,489)	(3,540)	(3,565)
Change in SERP investment	(4,114)	(2,093)	(2,208)
Net cash used in investing activities	(109,269)	(92,838)	(96,282)
Cash flows from financing activities:
Payments on long-term debt	0	(34,988)	(29,488)
Dividends paid	(33,354)	(32,546)	(32,278)
Net cash used in financing activities	(33,354)	(67,534)	(61,766)
Net increase (decrease) in cash and cash equivalents	29,063	(10,109)	1,099
Cash and cash equivalents at beginning of year	37,808	47,917	46,818
Cash and cash equivalents at end of period	$ 66,871	$ 37,808	$ 47,917