Consolidated Statements of Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements of Income (Loss) [Abstract]
Net sales	$ 361,954	$ 312,889
Cost of sales	257,391	221,479
Gross profit	104,563	91,410
Selling and administrative expenses	98,542	90,834
Operating income	6,021	576
Interest expense, net	1,477	1,645
Income (loss) before income taxes and equity earnings	4,544	(1,069)
Provision (benefit) for income taxes	1,037	(419)
Equity earnings in unconsolidated investments	144	12
Net income (loss)	$ 3,651	$ (638)
Earnings (loss) per share: [Abstract]
Basic (in dollars per share)	$ 0.08	$ (0.01)
Diluted (in dollars per share)	$ 0.08	$ (0.01)
Weighted average shares outstanding: [Abstract]
Basic (in shares)	47,519	48,864
Diluted (in shares)	48,598	48,864
Cash dividends declared per common share	$ 0.14	$ 0.13