Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Current:
Cash and cash equivalents	$ 21,305	$ 14,653
Marketable securities	63,665	67,171
SERP investment	14,476	11,154
Accounts receivable, net	82,877	96,170
Inventories	279,509	276,783
Prepaid expenses and other current assets	19,435	16,310
Income taxes recoverable	2,047	1,625
Total current assets	483,314	483,866
Property and equipment, net	886,243	878,195
Goodwill	52,330	52,330
Intangible and other assets, net	19,852	16,913
Total assets	1,441,739	1,431,304
Current:
Accounts payable	216,252	199,159
Accrued expenses	33,403	50,947
Accrued self-insurance	17,470	19,330
Deferred revenue, net	7,217	6,730
Total current liabilities	274,342	276,166
Long-term debt	34,988	64,476
Postretirement benefit obligations	18,409	15,277
Accrued self-insurance	20,140	21,353
Deferred income taxes	87,422	119,445
Other	13,594	7,865
Total liabilities	448,895	504,582
Shareholders' Equity
Common stock, no par value, 100,800,000 shares authorized, 33,047,807 shares issued, 26,898,443 shares outstanding	9,949	9,949
Retained earnings	1,127,872	1,062,778
Accumulated other comprehensive income, net	5,880	4,852
Shareholders' equity before treasury stock	1,143,701	1,077,579
Treasury stock at cost, 6,149,364 shares	(150,857)	(150,857)
Total shareholders' equity	992,844	926,722
Total liabilities and shareholders' equity	$ 1,441,739	$ 1,431,304