Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Current Assets
Cash and cash equivalents	$ 108,899	$ 163,944
Short-term investments	48,955	37,007
Trade accounts receivable, less allowance of $4,287 and $4,338	462,163	492,642
Other receivables, including advances to independent contractors, less allowance of $4,306 and $4,189	17,682	15,132
Deferred income taxes and other current assets	17,558	23,603
Total current assets	655,257	732,328
Operating property, less accumulated depreciation and amortization of $175,310 and $160,681	195,328	202,203
Goodwill	31,134	31,134
Other assets	71,303	78,547
Total assets	953,022	1,044,212
Current Liabilities
Cash overdraft	29,666	34,629
Accounts payable	205,514	220,077
Current maturities of long-term debt	36,259	35,064
Insurance claims	19,438	24,233
Dividends payable		44,794
Other current liabilities	53,077	51,654
Total current liabilities	343,954	410,451
Long-term debt, excluding current maturities	59,959	76,257
Insurance claims	22,432	21,769
Deferred income taxes and other noncurrent liabilities	47,976	47,474
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 67,379,568 and 67,268,817 shares	674	673
Additional paid-in capital	193,502	189,012
Retained earnings	1,355,535	1,255,374
Cost of 24,193,516 and 22,474,331 shares of common stock in treasury	(1,068,267)	(955,613)
Accumulated other comprehensive loss	(2,743)	(1,185)
Total shareholders' equity	478,701	488,261
Total liabilities and shareholders' equity	$ 953,022	$ 1,044,212