CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Sales	$ 196,662	$ 220,858
Cost of sales	133,609	152,457
Gross profit	63,053	68,401
Selling, general, and administrative expenses	47,601	47,016
Restructuring charges		471
Operating income	15,452	20,914
Interest expense	1,506	4,017
Other expense, net	2,200	2,328
Income before income tax expense	11,746	14,569
Income tax expense	4,489	5,367
Net income	7,257	9,202
Net earnings per share:
Basic (in dollars per share)	$ 0.16	$ 0.20
Diluted (in dollars per share)	$ 0.15	$ 0.20
Dividends per share (in dollars per share)	$ 0.10	$ 0.06
Weighted-average shares outstanding:
Basic (in shares)	46,496,144	46,160,748
Diluted (in shares)	47,095,990	46,874,899
Net income	7,257	9,202
Other comprehensive income
Foreign currency translation adjustment	2,647	4,639
Unrealized gain on derivatives		1,443
Total comprehensive income	$ 9,904	$ 15,284