Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 116,329	$ 58,506
Marketable securities	0	451
Trade accounts receivable, net of allowance for doubtful accounts of $11,587 and $9,248, respectively	522,265	414,331
Inventories	836,379	784,068
Deferred income tax assets	17,098	18,248
Prepaid income taxes	0	24,869
Other current assets	127,334	107,988
Total current assets	1,619,405	1,408,461
Property and equipment, less accumulated depreciation	741,489	654,850
Other assets, net	12,101	12,473
Total assets	2,372,995	2,075,784
Current liabilities:
Line of credit	105,000	0
Accounts payable	112,579	91,253
Accrued expenses	182,143	148,579
Income taxes payable	8,181	0
Total current liabilities	407,903	239,832
Deferred income tax liabilities	63,519	63,255
Stockholders' equity:
Preferred stock, 5,000,000 shares authorized	0	0
Common stock, 400,000,000 shares authorized, 296,440,794 and 296,753,544 shares issued and outstanding, respectively	2,965	2,968
Additional paid-in capital	56,734	69,847
Retained earnings	1,841,994	1,688,781
Accumulated other comprehensive (loss) income	(120)	11,101
Total stockholders' equity	1,901,573	1,772,697
Total liabilities and stockholders' equity	$ 2,372,995	$ 2,075,784