Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Current:
Cash and cash equivalents	$ 12,295	$ 14,653
Marketable securities	64,279	67,171
SERP investment	12,640	11,154
Accounts receivable, net	77,455	96,170
Inventories	275,217	276,783
Prepaid expenses and other current assets	16,932	16,310
Income taxes recoverable	0	1,625
Total current assets	458,818	483,866
Property and equipment, net	870,072	878,195
Goodwill	52,330	52,330
Intangible and other assets, net	18,173	16,913
Total assets	1,399,393	1,431,304
Current:
Accounts payable	170,897	199,159
Accrued expenses	34,949	50,947
Accrued self-insurance	14,912	19,330
Deferred revenue, net	5,252	6,730
Income taxes payable	323	0
Total current liabilities	226,333	276,166
Long-term debt	70,874	64,476
Postretirement benefit obligations	14,969	15,277
Accrued self-insurance	21,353	21,353
Deferred income taxes	126,932	119,445
Other	8,380	7,865
Total liabilities	468,841	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	1,066,544	1,062,778
Accumulated other comprehensive income (Net of deferred taxes of $3,393 in 2017 and $3,382 in 2016)	4,916	4,852
Shareholders' equity before treasury stock	1,081,409	1,077,579
Treasury stock at cost, 6,149,364 shares	(150,857)	(150,857)
Total shareholders' equity	930,552	926,722
Total liabilities and shareholders' equity	$ 1,399,393	$ 1,431,304