Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 26, 2016
Cash flows from operating activities:
Net income	$ 11,836	$ 20,129
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,962	18,368
Gain on disposition of fixed assets	(796)	(75)
Gain on sale of marketable securities	0	(269)
Deferred income taxes	7,476	(1,153)
Changes in operating assets and liabilities:
Inventories	1,566	3,352
Accounts receivable and prepaid expenses	17,539	5,658
Accounts payable and other liabilities	(45,789)	(21,239)
Income taxes	1,948	12,773
Other	(110)	525
Net cash provided by operating activities	14,632	38,069
Cash flows from investing activities:
Purchase of property and equipment	(17,056)	(29,935)
Proceeds from the sale of property and equipment	1,142	124
Purchase of marketable securities	(2,579)	(1,284)
Proceeds from maturities of marketable securities	1,895	0
Proceeds from the sale of marketable securities	4,006	15,213
Purchase of intangible assets	(1,240)	(549)
Change in SERP investment	(1,486)	(763)
Net cash used in investing activities	(15,318)	(17,194)
Cash flows from financing activities:
Proceeds from long-term debt	6,398	0
Dividends paid	(8,070)	(8,070)
Net cash used in financing activities	(1,672)	(8,070)
Net (decrease) increase in cash and cash equivalents	(2,358)	12,805
Cash and cash equivalents at beginning of year	14,653	17,596
Cash and cash equivalents at end of period	$ 12,295	$ 30,401