Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					12 Months Ended											3 Months Ended	12 Months Ended						12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Foreign Valuation Allowance [Member]	Dec. 31, 2012 Foreign Valuation Allowance [Member]	Dec. 31, 2011 Foreign Valuation Allowance [Member]	Dec. 31, 2012 Domestic Gains and Losses Included in OCI and Discontinued Operations [Member]	Dec. 31, 2011 Domestic Gains and Losses Included in OCI and Discontinued Operations [Member]	Dec. 31, 2013 Domestic Valuation Allowance [Member]	Dec. 31, 2012 Domestic Valuation Allowance [Member]	Dec. 31, 2011 Domestic Valuation Allowance [Member]	Dec. 31, 2013 Foreign Gains and Losses Related to Deferred Taxes and Currency Translation Adjustments Included in OCI [Member]	Dec. 31, 2012 Foreign Gains and Losses Related to Deferred Taxes and Currency Translation Adjustments Included in OCI [Member]	Dec. 31, 2011 Foreign Gains and Losses Related to Deferred Taxes and Currency Translation Adjustments Included in OCI [Member]	Dec. 31, 2012 Domestic Valuation Allowance Release of Valuation Allowance Due to Profitability [Member]	Dec. 31, 2012 Domestic Valuation Allowance Income and Deferred Tax Amounts in Continuing Operations Prior to the Release of the Valuation Allowance in the Fourth Quarter of 2012 [Member]	Dec. 31, 2013 Foreign Valuation Allowance Change for Income Loss [Member]	Dec. 31, 2012 Foreign Valuation Allowance Change for Income Loss [Member]	Dec. 31, 2011 Foreign Valuation Allowance Change for Income Loss [Member]	Dec. 31, 2011 Domestic Valuation Allowance Change for Income Loss [Member]	Dec. 31, 2013 Foreign Operating Loss Carryforward [Member]	Dec. 31, 2013 Non-US Jurisdiction [Member]	Dec. 31, 2013 Foreign Operating Loss Acquired in 2010 [Member]
Income/(loss) before income taxes [Abstract]
Domestic	$ 23,068	$ 13,525	$ 3,749
International	21,939	17,843	16,188
Income before income taxes	45,007	31,368	19,937
Current [Abstract]
Federal	630	(177)	(196)
State	15	4	45
International	5,980	8,525	7,074
Current, Total	6,625	8,352	6,923
Deferred [Abstract]
Federal	7,014	(36,287)	204
International	1,093	(3,926)	(925)
Deferred, Total	8,107	(40,213)	(721)
Total	14,732	(31,861)	6,202
Statutory federal income tax rate (in hundredths)	35.00%	35.00%	35.00%
Provision for income taxes differs from the statutory federal income tax rate [Abstract]
Income tax provision at U.S federal statutory rate	15,752	10,979	6,978
Effect of foreign income taxed at rates other than the U.S. federal statutory rate	242	(451)	469
Foreign income inclusions	0	4,563	8,398
Tax credits	(250)	(177)	(196)
Change in tax laws	(1,155)	(1,329)	0
Indefinite-lived intangibles	0	0	204
Net change in valuation allowance	(97)	(45,105)	(9,546)			(48)	(140)	(582)	(2,543)	9,644	(3)	(47,490)	304	46	18	(376)	(36,287)	(8,660)	(94)	(158)	(206)	(9,340)
Other	240	(341)	(105)
Total	14,732	(31,861)	6,202
Deferred tax assets [Abstract]
Inventory	2,510	2,263
Legal and related reserves	260	100
Foreign tax credit carryforwards	31,463	35,410
Environmental	2,995	850
Net capital loss carryforwards (domestic)	31	31
Net operating loss carryforwards (foreign)	944	902
Employee benefits	12,841	17,977
Restructuring	239	334
Research & experimentation tax credit carryforwards	1,900	1,681
Alternative minimum tax credit carryforwards	2,773	2,604
Property, plant and equipment	3,843	4,228
Other	3,507	4,553
Total gross deferred tax assets	63,306	70,933
Valuation allowances	(29,890)	(29,941)
Total deferred tax assets	33,416	40,992
Deferred tax liabilities [Abstract]
Property, plant and equipment	(9,059)	(6,523)
Intangibles and other	(9,856)	(9,510)
Unremitted foreign earnings	(568)	(541)
Foreign tax allocation reserve	(2,006)	(2,544)
Other	(2,187)	(2)
Total deferred tax liabilities	(23,676)	(19,120)
Net deferred tax asset / (liability)	9,740	21,872
Classified as follows in the consolidated balance sheet: [Abstract]
Current deferred tax asset (included in other current assets)	2,874	1,469
Non-current deferred tax asset	19,799	30,786
Current deferred tax liability (included in other current liabilities)	(98)	0
Non-current deferred tax liability	(12,835)	(10,383)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards																							3,356
Acquired operating loss carryforwards																									2,090
Foreign earnings repatriated	0	8,953
Valuation Allowance [Line Items]
Net change in valuation allowance	(97)	(45,105)	(9,546)			(48)	(140)	(582)	(2,543)	9,644	(3)	(47,490)	304	46	18	(376)	(36,287)	(8,660)	(94)	(158)	(206)	(9,340)
Activity related to the entity's unrecognized tax benefits [Roll Forward]
Balance at January 1	3,967	4,328	4,085
Gross increases related to current period tax positions	257	348	317
Gross increases/(decreases) related to prior period tax positions	(427)	(483)	95
Expirations of statute of limitations for the assessment of taxes	(37)	(113)	(38)
Settlements	0	(175)	0
Foreign currency translation	162	62	(131)
Balance at December 31	3,922	3,967	4,328
Unrecognized tax benefits that would affect effective tax rate	3,922
Gross interest and penalties related to unrecognized tax benefits	5,005	4,511	3,427
Interest and penalties	219	985	328
Income Tax Contingency [Line Items]
Increase in reserve for unrecognized tax benefits																								450
Amount in which the reserve for unrecognized tax benefits changed due to foreign currency translation																								279
Potential future increase in reserve for unrecognized tax benefits for intercompany transactions and acquired tax attributes	500
Potential future increase/(decrease) to unrecognized tax benefits				$ (6,400)	$ 8,000