Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Assets
Cash and cash equivalents	$ 17,965	$ 14,381
Marketable securities	63,093	82,501
SERP investment	8,752	7,058
Accounts receivable, net	57,193	53,842
Inventories	240,452	245,243
Prepaid expenses	17,293	10,132
Total current assets	404,748	413,157
Property and equipment, net	704,985	638,634
Goodwill	35,162	35,162
Intangible and other assets, net	3,347	3,487
Total assets	1,148,242	1,090,440
Liabilities
Accounts payable	133,568	126,258
Accrued expenses	27,416	27,193
Accrued self-insurance	19,333	18,544
Deferred revenue, net	7,056	6,635
Income taxes payable	1,628	1,359
Deferred income taxes	4,219	3,420
Total current liabilities	193,220	183,409
Postretirement benefit obligations	17,101	15,206
Deferred income taxes	97,934	89,109
Other	5,934	7,026
Total liabilities	314,189	294,750
Shareholders' Equity
Common stock, no par value, 100,800,000 shares authorized, 33,047,807 shares issued	9,949	9,949
Retained earnings	971,022	931,579
Accumulated other comprehensive income, net	3,939	5,019
Shareholders' equity before treasury stock	984,910	946,547
Treasury stock at cost, 6,149,364 shares	(150,857)	(150,857)
Total shareholders' equity	834,053	795,690
Total liabilities and shareholders' equity	$ 1,148,242	$ 1,090,440