Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 49,492	$ 34,760
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	69,589	63,523
(Gain) loss on disposition of fixed assets	(76)	(1,036)
Loss on sale of marketable securities	54	5
Unrealized loss in value of equity securities	883	0
Deferred income taxes	3,752	8,862
Changes in operating assets and liabilities:
Inventories	(1,388)	8,613
Accounts receivable and prepaid expenses	(2,118)	10,264
Accounts payable and other liabilities	(17,172)	(27,702)
Income taxes	8,637	(123)
Other	409	(1,326)
Net cash provided by operating activities	112,062	95,840
Cash flows from investing activities:
Purchase of property and equipment	(64,504)	(65,356)
Proceeds from the sale of property and equipment	1,113	2,195
Purchase of marketable securities	(3,256)	(11,254)
Proceeds from maturities of marketable securities	4,915	7,402
Proceeds from the sale of marketable securities	4,333	7,257
Purchase of intangible assets	(3,540)	(1,414)
Change in SERP investment	(1,531)	(2,453)
Net cash used in investing activities	(62,470)	(63,623)
Cash flows from financing activities:
Payments on long-term debt	(34,988)	(12,390)
Dividends paid	(24,209)	(24,209)
Net cash used in financing activities	(59,197)	(36,599)
Net decrease in cash and cash equivalents	(9,605)	(4,382)
Cash and cash equivalents at beginning of year	47,917	46,818
Cash and cash equivalents at end of period	$ 38,312	$ 42,436