Accumulated Other Comprehensive Income/(Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Changes In accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	$ (19,113)	$ (37,639)	$ (18,962)	$ (34,091)
Other comprehensive loss before reclassifications	(3,551)	1,020	(3,921)	(2,829)
Amounts reclassified from accumulated other comprehensive income	4,620	303	4,839	604
Net current-period other comprehensive income	1,069	1,323	918	(2,225)
Ending balance	(18,044)	(36,316)	(18,044)	(36,316)
Amount Reclassified from AOCI [Abstract]
Interest expense, net	543	488	1,065	983
Selling, general and administrative expenses	14,560	10,622	26,193	21,726
Cost of goods sold	64,478	43,552	114,005	93,688
Net income	19,667	2,274	20,649	13,442
Amounts reclassified from accumulated other comprehensive income/(loss) [Member]
Amount Reclassified from AOCI [Abstract]
Net income	(4,620)	(303)	(4,839)	(604)
Foreign Currency Translation Adjustments [Member]
Changes In accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	9,667	1,341	9,990	5,177
Other comprehensive loss before reclassifications	(3,515)	952	(3,838)	(2,884)
Amounts reclassified from accumulated other comprehensive income	4,400	0	4,400	0
Net current-period other comprehensive income	885	952	562	(2,884)
Ending balance	10,552	2,293	10,552	2,293
Amount Reclassified from AOCI [Abstract]
Foreign currency translation adjustment	(4,400)		(4,400)
Foreign currency translation adjustment, tax benefit	0		0
Foreign currency translation adjustment, net of tax	(4,400)		(4,400)
Interest Rate Swap [Member]
Changes In accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	(369)	(544)	(396)	(600)
Other comprehensive loss before reclassifications	(36)	68	(83)	55
Amounts reclassified from accumulated other comprehensive income	75	71	149	140
Net current-period other comprehensive income	39	139	66	195
Ending balance	(330)	(405)	(330)	(405)
Amount Reclassified from AOCI [Abstract]
Interest expense, net	(116)	(109)	(230)	(216)
Tax benefit	41	38	81	76
Net of Tax	(75)	(71)	(149)	(140)
Pension Plans [Member]
Changes In accumulated other comprehensive income/(loss) [Roll Forward]
Beginning balance	(28,411)	(38,436)	(28,556)	(38,668)
Other comprehensive loss before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	145	232	290	464
Net current-period other comprehensive income	145	232	290	464
Ending balance	(28,266)	(38,204)	(28,266)	(38,204)
Amount Reclassified from AOCI [Abstract]
Total before tax	(215)	(347)	(430)	(695)
Tax benefit	70	115	140	231
Net of Tax	(145)	(232)	(290)	(464)
Actuarial Loss [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses	(189)	(306)	(381)	(613)
Cost of goods sold	(13)	(29)	(24)	(58)
Prior Service Cost [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses	$ (13)	$ (12)	$ (25)	$ (24)