Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 155,458	$ 129,019
Trade accounts receivable, net of allowance for doubtful accounts of $11,123 and $11,729, respectively	537,341	468,375
Inventories	985,085	913,263
Prepaid income taxes	0	22,558
Other current assets	113,022	131,561
Total current assets	1,790,906	1,664,776
Property and equipment, net	859,490	818,889
Other assets, net	48,740	48,797
Total assets	2,699,136	2,532,462
Current liabilities:
Current portion of debt	67,610	62,050
Accounts payable	158,698	125,973
Accrued expenses	176,556	185,143
Income taxes payable	8,318	0
Total current liabilities	411,182	373,166
Long-term debt	362,390	302,950
Deferred income tax liabilities	57,402	55,057
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value, 400,000,000 shares authorized; 288,945,899 and 289,581,682 shares issued and outstanding, respectively	2,890	2,896
Additional paid-in capital	27,701	2,024
Retained earnings	1,871,813	1,842,772
Accumulated other comprehensive loss	(34,242)	(46,403)
Total stockholders' equity	1,868,162	1,801,289
Total liabilities and stockholders' equity	$ 2,699,136	$ 2,532,462