Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016
Cash flows from operating activities:
Net income	$ 34,760	$ 46,021
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	63,523	56,198
(Gain) loss on disposition of fixed assets	(1,036)	690
(Gain) loss on sale of marketable securities	5	(438)
Gain on sale of intangible assets	0	(200)
Deferred income taxes	8,862	(2,628)
Changes in operating assets and liabilities:
Inventories	8,613	3,333
Accounts receivable and prepaid expenses	20,147	10,783
Accounts payable and other liabilities	(27,702)	(2,675)
Income taxes	(123)	(114)
Other	(1,326)	970
Net cash provided by operating activities	105,723	111,940
Cash flows from investing activities:
Purchase of property and equipment	(65,356)	(96,659)
Proceeds from the sale of property and equipment	2,195	281
Purchase of marketable securities	(11,254)	(29,277)
Proceeds from maturities of marketable securities	7,402	835
Proceeds from the sale of marketable securities	7,257	42,516
Acquisitions	0	(47,547)
Purchase of intangible assets	(1,414)	(1,697)
Proceeds from sale of intangible assets	0	200
Change in SERP investment	(2,453)	(1,570)
Net cash used in investing activities	(63,623)	(132,918)
Cash flows from financing activities:
Proceeds from long-term debt		40,139
Payments on long-term debt	(12,390)
Dividends paid	(24,209)	(24,209)
Net cash (used in) provided by financing activities	(36,599)	15,930
Net increase (decrease) in cash and cash equivalents	5,501	(5,048)
Cash and cash equivalents at beginning of year	14,653	17,596
Cash and cash equivalents at end of period	$ 20,154	$ 12,548