Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 25, 2016	Dec. 26, 2015
Current Assets
Cash and cash equivalents	$ 153,370	$ 114,520
Short-term investments	61,528	48,823
Trade accounts receivable, less allowance of $5,092 and $4,327	402,362	462,699
Other receivables, including advances to independent contractors, less allowance of $4,755 and $4,143	18,584	18,472
Other current assets	20,608	11,604
Total current assets	656,452	656,118
Operating property, less accumulated depreciation and amortization of $187,774 and $182,591	236,177	225,927
Goodwill	31,134	31,134
Other assets	60,994	78,339
Total assets	984,757	991,518
Current Liabilities
Cash overdraft	30,355	35,609
Accounts payable	191,247	223,709
Current maturities of long-term debt	42,209	42,499
Insurance claims	26,135	19,757
Other current liabilities	44,642	47,963
Total current liabilities	334,588	369,537
Long-term debt, excluding current maturities	76,724	81,793
Insurance claims	23,042	21,477
Deferred income taxes and other noncurrent liabilities	53,148	52,474
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 67,504,785 and 67,391,616 shares	675	674
Additional paid-in capital	197,503	195,841
Retained earnings	1,444,691	1,389,975
Cost of 25,397,002 and 24,972,079 shares of common stock in treasury	(1,143,360)	(1,116,765)
Accumulated other comprehensive loss	(2,254)	(3,488)
Total shareholders' equity	497,255	466,237
Total liabilities and shareholders' equity	$ 984,757	$ 991,518