Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Current Assets
Cash and cash equivalents	$ 218,554	$ 319,515
Short-term investments	39,068	32,901
Trade accounts receivable, less allowance of $8,120 and $7,284	637,908	588,549
Other receivables, including advances to independent contractors, less allowance of $8,827 and $7,667	40,550	35,553
Other current assets	27,989	21,370
Total current assets	964,069	997,888
Operating property, less accumulated depreciation and amortization of $291,159 and $280,849	279,495	285,855
Goodwill	40,251	38,508
Other assets	108,390	105,460
Total assets	1,392,205	1,427,711
Current Liabilities
Cash overdraft	47,459	53,878
Accounts payable	339,798	271,996
Current maturities of long-term debt	34,723	42,632
Insurance claims	46,019	44,532
Dividends payable		78,947
Contractor escrow	28,345	24,902
Other current liabilities	47,206	36,017
Total current liabilities	543,550	552,904
Long-term debt, excluding current maturities	52,570	70,212
Insurance claims	36,344	33,575
Deferred income taxes and other noncurrent liabilities	54,107	49,551
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 68,181,418 and 68,083,419 shares	682	681
Additional paid-in capital	226,878	226,123
Retained earnings	2,065,999	1,962,161
Cost of 29,797,639 and 28,609,926 shares of common stock in treasury	(1,581,961)	(1,465,284)
Accumulated other comprehensive loss	(5,964)	(2,212)
Total shareholders' equity	705,634	721,469
Total liabilities and shareholders' equity	$ 1,392,205	$ 1,427,711