CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 21,117	$ 30,919
Accounts receivable, less allowance for doubtful accounts of $22671 in 2013 and $22,716 in 2012	662,195	658,760
Inventories	732,202	767,206
Other current assets	26,014	30,118
Total current assets	1,441,528	1,487,003
Property, plant and equipment, net	139,098	143,523
Goodwill	358,427	357,226
Intangible assets, net	64,713	67,192
Other long-term assets	26,598	20,260
Total assets	2,030,364	2,075,204
Current liabilities:
Accounts payable	475,207	495,278
Accrued liabilities	176,394	205,228
Short-term debt	1,200
Total current liabilities	652,801	700,506
Deferred income taxes	16,693	18,054
Long-term debt	517,285	524,376
Other long-term liabilities	83,059	94,176
Total liabilities	1,269,838	1,337,112
Stockholders' equity:
Common stock, $0.10 par value; authorized-100,000,000 shares, issued-74,435,628 shares in 2013 and 2012	7,444	7,444
Additional paid-in capital	408,419	404,196
Treasury stock, at cost - 34,605,362 shares in 2013 and 34,116,220 shares in 2012	(986,949)	(963,220)
Retained earnings	1,380,727	1,343,437
Accumulated other comprehensive loss	(49,115)	(53,765)
Total stockholders' equity	760,526	738,092
Total liabilities and stockholders' equity	$ 2,030,364	$ 2,075,204