CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net sales	$ 221,018	$ 238,650	$ 417,679	$ 459,509
Cost of sales	146,611	162,157	280,220	314,614
Gross profit	74,407	76,493	137,459	144,895
Selling, general, and administrative expenses	53,604	52,925	101,205	99,941
Restructuring charges		243		714
Operating income	20,803	23,325	36,254	44,240
Interest expense	1,637	3,372	3,143	7,389
Other (income) expense, net	(1,262)	275	937	2,604
Income before income tax expense	20,428	19,678	32,174	34,247
Income tax expense	7,373	6,703	11,862	12,070
Net income	13,055	12,975	20,312	22,177
Net earnings per share:
Basic (in dollars per share)	$ 0.28	$ 0.28	$ 0.44	$ 0.48
Diluted (in dollars per share)	$ 0.28	$ 0.28	$ 0.43	$ 0.47
Dividends per share (in dollars per share)	$ 0.10	$ 0.10	$ 0.20	$ 0.16
Weighted-average shares outstanding:
Basic (in shares)	46,620,897	46,245,776	46,558,520	46,203,498
Diluted (in shares)	47,017,440	46,904,015	47,056,715	46,889,703
Net income	13,055	12,975	20,312	22,177
Other comprehensive income (loss)
Foreign currency translation adjustment	(5,156)	2,234	(2,510)	6,873
Unrealized gain on derivatives		1,179		2,622
Total comprehensive income	$ 7,899	$ 16,388	$ 17,802	$ 31,672