Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 27, 2020	Dec. 28, 2019
Current Assets
Cash and cash equivalents	$ 245,471	$ 319,515
Short-term investments	36,274	32,901
Trade accounts receivable, less allowance of $8,580 and $7,284	489,182	588,549
Other receivables, including advances to independent contractors, less allowance of $9,241 and $7,667	27,861	35,553
Other current assets	41,564	21,370
Total current assets	840,352	997,888
Operating property, less accumulated depreciation and amortization of $288,055 and $280,849	284,794	285,855
Goodwill	40,071	38,508
Other assets	106,893	105,460
Total assets	1,272,110	1,427,711
Current Liabilities
Cash overdraft	35,534	53,878
Accounts payable	273,324	271,996
Current maturities of long-term debt	38,219	42,632
Insurance claims	53,764	44,532
Dividends payable		78,947
Contractor escrow	25,774	24,902
Other current liabilities	46,845	36,017
Total current liabilities	473,460	552,904
Long-term debt, excluding current maturities	60,152	70,212
Insurance claims	34,762	33,575
Deferred income taxes and other noncurrent liabilities	54,615	49,551
Shareholders' Equity
Common stock, $0.01 par value, authorized 160,000,000 shares, issued 68,176,787 and 68,083,419 shares	682	681
Additional paid-in capital	225,332	226,123
Retained earnings	2,012,173	1,962,161
Cost of 29,797,328 and 28,609,926 shares of common stock in treasury	(1,581,921)	(1,465,284)
Accumulated other comprehensive loss	(7,145)	(2,212)
Total shareholders' equity	649,121	721,469
Total liabilities and shareholders' equity	$ 1,272,110	$ 1,427,711