CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 140,432	$ 148,403	$ 275,472	$ 285,011
Cost of products sold (excluding depreciation)	94,057	102,456	186,472	196,282
Depreciation and amortization	7,305	6,442	14,052	12,955
Selling, general and administrative expenses	17,391	20,568	36,917	42,770
Research and development expenses	1,460	2,524	2,862	4,268
Restructuring (Note 1)	(18)		(42)
Litigation and other contingencies		(172)		(19)
Total costs and expenses	120,195	131,818	240,261	256,256
Income from operations	20,237	16,585	35,211	28,755
Interest income	12	17	136	29
Interest expense	(129)		(306)	(19)
Other expense-net	(341)	(513)	(1,169)	(764)
Income before income tax provision	19,779	16,089	33,872	28,001
Income tax provision	6,809	5,205	11,088	9,379
Net income	12,970	10,884	22,784	18,622
Other comprehensive income (loss), net of tax (Note 5)
Foreign currency translation	770	(4,337)	(5,518)	(2,343)
Derivatives	(15)	454	559	581
Employee benefit plans	1,713	(474)	1,335	(1,032)
Comprehensive income	$ 15,438	$ 6,527	$ 19,160	$ 15,828
Net income per common share
Basic (in dollars per share)	$ 0.24	$ 0.19	$ 0.42	$ 0.33
Diluted (in dollars per share)	$ 0.24	$ 0.19	$ 0.42	$ 0.33
Weighted average shares outstanding
Basic (in shares)	53,799,261	56,639,330	53,710,300	56,575,779
Diluted (in shares)	54,547,189	57,190,357	54,375,535	57,157,408