Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Cash flows from operating activities:
Net income	$ 98,414	$ 87,162	$ 59,330
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	85,415	76,862	70,114
(Gain) loss on disposition of fixed assets	(700)	1,353	(54)
Impairment of fixed assets	0	894	0
(Gain) loss on sale of marketable securities	40	(437)	(27)
Gain on sale of intangible assets	0	(200)	0
Gain on acquisition of business	0	(23,879)	0
Deferred income taxes	(31,993)	5,703	(212)
Changes in operating assets and liabilities:
Inventories	(2,726)	(38,102)	10,242
Accounts receivable and prepaid expenses	9,598	(5,096)	(17,127)
Accounts payable and other liabilities	7,742	46,131	14,403
Income taxes	(422)	41	(1,054)
Other	446	1,161	1,118
Net cash provided by operating activities	165,814	151,593	136,733
Cash flows from investing activities:
Purchase of property and equipment	(95,857)	(142,144)	(90,210)
Proceeds from the sale of property and equipment	2,246	442	1,929
Purchase of marketable securities	(12,612)	(40,858)	(31,329)
Proceeds from maturities of marketable securities	8,442	1,335	3,201
Proceeds from the sale of marketable securities	7,272	62,566	9,171
Acquisition of business	0	(63,632)	0
Purchase of intangible assets	(3,565)	(2,568)	(2,649)
Proceeds from sale of intangible assets	0	200	0
Change in SERP investment	(3,322)	(2,075)	42
Net cash used in investing activities	(97,396)	(186,734)	(109,845)
Cash flows from financing activities:
Payments on long-term debt	(29,488)
Proceeds from long-term debt		64,476
Dividends paid	(32,278)	(32,278)	(32,278)
Net cash (used in) provided by financing activities	(61,766)	32,198	(32,278)
Net increase (decrease) in cash and cash equivalents	6,652	(2,943)	(5,390)
Cash and cash equivalents at beginning of year	14,653	17,596	22,986
Cash and cash equivalents at end of year	$ 21,305	$ 14,653	$ 17,596