Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Current Assets
Cash and cash equivalents	$ 67,474	$ 74,284
Short-term investments	34,560	35,528
Trade accounts receivable, less allowance of $8,142 and $8,650	391,449	408,787
Other receivables, including advances to independent contractors, less allowance of $4,257 and $4,657	56,483	55,278
Deferred income taxes and other current assets	23,187	18,067
Total current assets	573,153	591,944
Operating property, less accumulated depreciation and amortization of $155,499 and $158,999	179,777	158,953
Goodwill	57,470	57,470
Other assets	81,831	71,054
Total assets	892,231	879,421
Current Liabilities
Cash overdraft	27,025	33,647
Accounts payable	188,529	188,981
Current maturities of long-term debt	25,252	19,016
Insurance claims	67,392	64,509
Other current liabilities	33,402	38,186
Total current liabilities	341,600	344,339
Long-term debt, excluding current maturities	94,033	95,125
Insurance claims	20,538	21,896
Deferred income taxes and other noncurrent liabilities	43,816	38,607
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 66,996,081 and 66,859,864 shares	670	669
Additional paid-in capital	177,486	173,976
Retained earnings	1,100,162	1,042,956
Cost of 21,296,347 and 20,411,736 shares of common stock in treasury	(886,135)	(839,517)
Accumulated other comprehensive income	61	1,370
Total shareholders' equity	392,244	379,454
Total liabilities and shareholders' equity	$ 892,231	$ 879,421