CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 535,004	$ 555,103	$ 547,939
Cost of products sold (excluding depreciation and amortization)	343,522	363,014	366,962
Depreciation and amortization	35,453	30,470	28,938
Selling, general and administrative expenses	84,810	80,860	76,958
Research and development expenses	6,425	6,406	6,037
Restructuring income		(252)	(129)
Litigation and other contingencies (Note 16)			284
Total costs and expenses	470,210	480,498	479,050
Income from operations	64,794	74,605	68,889
Interest income	58	77	136
Interest expense	(773)	(263)	(462)
Other expense - net	(693)	(1,911)	(1,364)
Income before income tax provision	63,386	72,508	67,199
Income tax provision (Note 14)	19,923	23,138	21,486
Net income	43,463	49,370	45,713
Other comprehensive (loss) income, net of tax (Note 12
Foreign currency translation	(13,013)	(14,850)	(305)
Defined benefit pension plans	(116)	(11,908)	15,268
Derivatives	(991)	388	424
Net current period other comprehensive (loss)	(14,120)	(26,370)	15,387
Total comprehensive income	$ 29,343	$ 23,000	$ 61,100
Net income per common share
Basic (in dollars per share)	$ 0.84	$ 0.93	$ 0.85
Diluted (in dollars per share)	0.82	0.92	0.84
Dividends per common share (in dollars per share)	$ 0.20	$ 0	$ 0
Weighted average shares outstanding
Basic (in shares)	51,902,408	53,042,253	53,897,834
Diluted (in shares)	52,708,898	53,940,812	54,671,029