Accumulated Other Comprehensive Income/(Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	$ (18,044)	$ (36,316)	$ (18,962)	$ (34,091)
Other comprehensive income/(loss) before reclassifications	(15,175)	4,595	(19,096)	1,766
Amounts reclassified from accumulated other comprehensive loss	220	314	5,059	918
Net current-period other comprehensive (loss)/income	(14,955)	4,909	(14,037)	2,684
Ending balance	(32,999)	(31,407)	(32,999)	(31,407)
Amount Reclassified from AOCI [Abstract]
Interest expense, net	(570)	(664)	(1,635)	(1,647)
Selling, general and administrative expenses	(12,541)	(11,128)	(38,734)	(32,854)
Cost of goods sold	(52,894)	(52,486)	(166,899)	(146,174)
Equity in losses of partially-owned affiliates	0	(508)	(4,618)	(1,657)
Total before tax	11,419	10,073	23,451	29,930
Tax benefit	(2,537)	(3,799)	6,424	(9,095)
Net of tax	8,769	3,574	29,418	17,016
Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Net of tax	(220)	(314)	(5,059)	(918)
Foreign Currency Translation Adjustments [Member]
Changes in accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	10,552	2,293	9,990	5,177
Other comprehensive income/(loss) before reclassifications	(15,172)	4,700	(19,010)	1,816
Amounts reclassified from accumulated other comprehensive loss	0	0	4,400	0
Net current-period other comprehensive (loss)/income	(15,172)	4,700	(14,610)	1,816
Ending balance	(4,620)	6,993	(4,620)	6,993
Foreign Currency Translation Adjustments [Member] | Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Equity in losses of partially-owned affiliates	0		(4,400)
Tax benefit	0		0
Net of tax	0		(4,400)
Cash Flow Hedge - Interest Rate Swap [Member]
Changes in accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	(330)	(405)	(396)	(600)
Other comprehensive income/(loss) before reclassifications	(3)	(105)	(86)	(50)
Amounts reclassified from accumulated other comprehensive loss	77	73	226	213
Net current-period other comprehensive (loss)/income	74	(32)	140	163
Ending balance	(256)	(437)	(256)	(437)
Cash Flow Hedge - Interest Rate Swap [Member] | Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Interest expense, net	(118)	(113)	(348)	(329)
Tax benefit	41	40	122	116
Net of tax	(77)	(73)	(226)	(213)
Defined Benefit Pension Plans [Member]
Changes in accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	(28,266)	(38,204)	(28,556)	(38,668)
Other comprehensive income/(loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive loss	143	241	433	705
Net current-period other comprehensive (loss)/income	143	241	433	705
Ending balance	(28,123)	(37,963)	(28,123)	(37,963)
Defined Benefit Pension Plans [Member] | Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Total before tax	(213)	(347)	(643)	(1,042)
Tax benefit	70	106	210	337
Net of tax	(143)	(241)	(433)	(705)
Actuarial Loss [Member] | Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses	(188)	(305)	(569)	(918)
Cost of goods sold	(12)	(29)	(36)	(87)
Prior Service Cost [Member] | Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses	$ (13)	$ (13)	$ (38)	$ (37)