Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 27, 2015	Dec. 27, 2014
Current Assets
Cash and cash equivalents	$ 82,426	$ 163,944
Short-term investments	48,864	37,007
Trade accounts receivable, less allowance of $4,441 and $4,338	481,605	492,642
Other receivables, including advances to independent contractors, less allowance of $4,304 and $4,189	21,678	15,132
Deferred income taxes and other current assets	22,307	23,603
Total current assets	656,880	732,328
Operating property, less accumulated depreciation and amortization of $169,110 and $160,681	190,082	202,203
Goodwill	31,134	31,134
Other assets	68,848	78,547
Total assets	946,944	1,044,212
Current Liabilities
Cash overdraft	31,717	34,629
Accounts payable	216,807	220,077
Current maturities of long-term debt	34,189	35,064
Insurance claims	22,123	24,233
Dividends payable		44,794
Other current liabilities	41,617	51,654
Total current liabilities	346,453	410,451
Long-term debt, excluding current maturities	59,020	76,257
Insurance claims	23,491	21,769
Deferred income taxes and other noncurrent liabilities	48,478	47,474
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 67,357,102 and 67,268,817 shares	674	673
Additional paid-in capital	191,221	189,012
Retained earnings	1,319,674	1,255,374
Cost of 23,781,485 and 22,474,331 shares of common stock in treasury	(1,040,248)	(955,613)
Accumulated other comprehensive loss	(1,819)	(1,185)
Total shareholders' equity	469,502	488,261
Total liabilities and shareholders' equity	$ 946,944	$ 1,044,212