Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Dec. 28, 2013
Assets
Cash and cash equivalents	$ 25,244	$ 17,965
Marketable securities	69,218	63,093
SERP investment	8,833	8,752
Accounts receivable, net	63,668	57,193
Inventories	219,732	240,452
Prepaid expenses	19,931	17,293
Total current assets	406,626	404,748
Property and equipment, net	712,819	704,985
Goodwill	35,162	35,162
Intangible and other assets, net	4,408	3,347
Total assets	1,159,015	1,148,242
Liabilities
Accounts payable	128,874	133,568
Accrued expenses	31,877	27,416
Accrued self-insurance	17,989	19,333
Deferred revenue, net	3,942	7,056
Income taxes payable	533	1,628
Deferred income taxes	7,857	4,219
Total current liabilities	191,072	193,220
Postretirement benefit obligations	17,946	17,101
Deferred income taxes	95,470	97,934
Other	2,256	5,934
Total liabilities	306,744	314,189
Shareholders' Equity
Common stock, no par value, 100,800,000 shares authorized, 33,047,807 shares issued	9,949	9,949
Retained earnings	988,084	971,022
Accumulated other comprehensive income (Net of deferred taxes of $3,556 in 2014 and $2,753 in 2013)	5,095	3,939
Shareholders' equity before treasury stock	1,003,128	984,910
Treasury stock at cost, 6,149,364 shares	(150,857)	(150,857)
Total shareholders' equity	852,271	834,053
Total liabilities and shareholders' equity	$ 1,159,015	$ 1,148,242