Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 14,304	$ 16,191
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,125	22,763
(Gain) loss on disposition of fixed assets	608	30
Loss on sale of marketable securities	0	54
Unrealized (gain) loss in value of equity securities	(625)	780
Deferred income taxes	(1,014)	(905)
Changes in operating assets and liabilities:
Inventories	138	12,444
Accounts receivable and prepaid expenses	9,894	7,627
Accounts payable and other liabilities	(18,912)	(15,616)
Income taxes	5,553	7,021
Other	588	398
Net cash provided by operating activities	33,659	50,787
Cash flows from investing activities:
Purchase of property and equipment	(24,444)	(21,844)
Proceeds from the sale of property and equipment	84	8
Purchase of marketable securities	(3,960)	(586)
Proceeds from maturities of marketable securities	235	1,000
Proceeds from the sale of marketable securities	0	512
Purchase of intangible assets	(540)	(1,500)
Change in SERP investment	(2,716)	(933)
Net cash used in investing activities	(31,341)	(23,343)
Cash flows from financing activities:
Payments on long-term debt	0	(17,076)
Dividends paid	(8,339)	(8,070)
Net cash used in financing activities	(8,339)	(25,146)
Net increase (decrease) in cash and cash equivalents	(6,021)	2,298
Cash and cash equivalents at beginning of year	37,808	47,917
Cash and cash equivalents at end of period	$ 31,787	$ 50,215