CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 162,561	$ 123,970	$ 458,262	$ 376,766
Cost of products sold (excluding depreciation and amortization)	114,018	85,430	319,119	251,552
Depreciation and amortization	11,462	9,082	35,250	27,318
Selling, general and administrative expenses	25,781	18,929	73,051	63,895
Research and development expenses	1,624	1,236	4,247	4,074
Total costs and expenses	152,885	114,677	431,667	346,839
Income from operations	9,676	9,293	26,595	29,927
Interest income	7		39	35
Interest expense	(2,099)	(538)	(5,634)	(1,099)
Other (expense) - net	(579)	(758)	(74)	(555)
Income before income tax provision	7,005	7,997	20,926	28,308
Income tax provision (Note 10)	1,894	1,612	9,187	8,569
Net income	5,111	6,385	11,739	19,739
Other comprehensive income (loss), net of tax (Note 8)
Foreign currency translation	10,954	(284)	22,845	(595)
Defined benefit pension plans	268	1,028	860	2,291
Derivatives	(166)	100	(1,434)	(689)
Total other comprehensive income	11,056	844	22,271	1,007
Total comprehensive income	$ 16,167	$ 7,229	$ 34,010	$ 20,746
Net income per common share
Basic (in dollars per share)	$ 0.10	$ 0.13	$ 0.23	$ 0.39
Diluted (in dollars per share)	0.10	0.13	0.23	0.39
Dividends per common share (in dollars per share)	$ 0.05	$ 0.05	$ 0.15	$ 0.15
Weighted average shares outstanding
Basic (in shares)	50,489	50,246	50,457	50,260
Diluted (in shares)	50,624	50,984	50,541	51,004