Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 250,560	$ 231,318
Accounts receivable, less allowance for doubtful accounts $8,713 in 2014 and $6,661 in 2013	143,900	131,504
Amounts receivable from vendors	69,311	66,619
Inventory	2,554,789	2,375,047
Other current assets	48,418	30,713
Total current assets	3,066,978	2,835,201
Property and equipment, at cost	3,993,509	3,606,837
Less: accumulated depreciation and amortization	1,334,949	1,181,734
Net property and equipment	2,658,560	2,425,103
Notes receivable, less current portion	13,349	13,066
Goodwill	756,384	756,225
Other assets, net	45,030	37,613
Total assets	6,540,301	6,067,208
Liabilities and shareholders' equity
Accounts payable	2,417,167	2,056,521
Self-insurance reserves	64,882	57,700
Accrued payroll	78,442	65,520
Accrued benefits and withholdings	62,946	41,262
Deferred income taxes	17,258	20,222
Other current liabilities	189,836	181,718
Current portion of long-term debt	25	67
Total current liabilities	2,830,556	2,423,010
Long-term debt, less current portion	1,396,615	1,396,141
Deferred income taxes	85,164	80,713
Other liabilities	209,548	201,023
Shareholders' equity:
Preferred stock, $0.01 par value: Authorized shares - 5,000,000 Issued and outstanding shares - none	0	0
Common stock, $0.01 par value: Authorized shares - 245,000,000 Issued and outstanding shares - 101,602,935 as of December 31, 2014, and 105,939,766 as of December 31, 2013	1,016	1,059
Additional paid-in capital	1,194,929	1,118,929
Retained earnings	822,473	846,333
Total shareholders' equity	2,018,418	1,966,321
Total liabilities and shareholders' equity	$ 6,540,301	$ 6,067,208