CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Current Assets
Cash and cash equivalents	$ 90,782	$ 74,284
Short-term investments	48,974	35,528
Trade accounts receivable, less allowance of $8,333 and $8,650	378,931	408,787
Other receivables, including advances to independent contractors, less allowance of $4,227 and $4,657	64,017	55,278
Deferred income taxes and other current assets	14,629	18,067
Total current assets	597,333	591,944
Operating property, less accumulated depreciation and amortization of $161,007 and $158,999	161,459	158,953
Goodwill	57,470	57,470
Other assets	68,772	71,054
Total assets	885,034	879,421
Current Liabilities
Cash overdraft	27,385	33,647
Accounts payable	179,014	188,981
Current maturities of long-term debt	20,673	19,016
Insurance claims	65,857	64,509
Other current liabilities	41,890	38,186
Total current liabilities	334,819	344,339
Long-term debt, excluding current maturities	82,448	95,125
Insurance claims	21,427	21,896
Deferred income taxes and other noncurrent liabilities	38,538	38,607
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 66,973,215 and 66,859,864 shares	670	669
Additional paid-in capital	175,841	173,976
Retained earnings	1,069,736	1,042,956
Cost of 20,412,020 and 20,411,736 shares of common stock in treasury	(839,532)	(839,517)
Accumulated other comprehensive income	1,087	1,370
Total shareholders' equity	407,802	379,454
Total liabilities and shareholders' equity	$ 885,034	$ 879,421