Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 24, 2016	Dec. 26, 2015
Current Assets
Cash and cash equivalents	$ 170,805	$ 114,520
Short-term investments	56,679	48,823
Trade accounts receivable, less allowance of $4,881 and $4,327	409,047	462,699
Other receivables, including advances to independent contractors, less allowance of $4,871 and $4,143	17,091	18,472
Other current assets	15,188	11,604
Total current assets	668,810	656,118
Operating property, less accumulated depreciation and amortization of $187,566 and $182,591	261,943	225,927
Goodwill	31,134	31,134
Other assets	65,871	78,339
Total assets	1,027,758	991,518
Current Liabilities
Cash overdraft	27,725	35,609
Accounts payable	201,872	223,709
Current maturities of long-term debt	44,784	42,499
Insurance claims	27,941	19,757
Other current liabilities	48,027	47,963
Total current liabilities	350,349	369,537
Long-term debt, excluding current maturities	90,817	81,793
Insurance claims	23,765	21,477
Deferred income taxes and other noncurrent liabilities	56,097	52,474
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 67,522,281 and 67,391,616 shares	675	674
Additional paid-in capital	198,736	195,841
Retained earnings	1,477,179	1,389,975
Cost of 25,747,002 and 24,972,079 shares of common stock in treasury	(1,167,391)	(1,116,765)
Accumulated other comprehensive loss	(2,469)	(3,488)
Total shareholders' equity	506,730	466,237
Total liabilities and shareholders' equity	$ 1,027,758	$ 991,518