Accumulated Other Comprehensive Income/(Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes In accumulated other comprehensive income [Roll Forward]
Beginning balance				$ (34,091)							$ (34,091)
Other comprehensive income/(loss) before reclassifications											13,901
Amounts reclassified from accumulated other comprehensive loss											1,228
Net current-period other comprehensive income											15,129	(2,504)	(19,695)
Ending balance	(18,962)					(34,091)					(18,962)	(34,091)
Amount Reclassified from AOCI [Abstract]
Interest expense, net											(2,242)	(2,439)	(2,373)
Selling, general and administrative expenses											(47,568)	(45,248)	(39,227)
Cost of goods sold											(215,272)	(186,014)	(181,569)
Net income	8,899	3,574	2,274	11,168	[1]	43,648	[2]	1,689	9,928	7,038	25,915	62,303	10,968
Amounts reclassified from accumulated other comprehensive income [Member]
Amount Reclassified from AOCI [Abstract]
Net income											(1,228)
Foreign Currency Translation Adjustments [Member]
Changes In accumulated other comprehensive income [Roll Forward]
Beginning balance				5,177							5,177
Other comprehensive income/(loss) before reclassifications											4,813
Amounts reclassified from accumulated other comprehensive loss											0
Net current-period other comprehensive income											4,813
Ending balance	9,990										9,990
Interest Rate Swap [Member]
Changes In accumulated other comprehensive income [Roll Forward]
Beginning balance				(600)							(600)
Other comprehensive income/(loss) before reclassifications											(85)
Amounts reclassified from accumulated other comprehensive loss											289
Net current-period other comprehensive income											204
Ending balance	(396)										(396)
Amount Reclassified from AOCI [Abstract]
Interest expense, net											(444)
Tax benefit											155
Net of Tax											(289)
Pension Plans [Member]
Changes In accumulated other comprehensive income [Roll Forward]
Beginning balance				(38,668)							(38,668)
Other comprehensive income/(loss) before reclassifications											9,173
Amounts reclassified from accumulated other comprehensive loss											939
Net current-period other comprehensive income											10,112
Ending balance	(28,556)										(28,556)
Amount Reclassified from AOCI [Abstract]
Total before tax											(1,389)
Tax benefit											450
Net of Tax											(939)
Actuarial Loss [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses											(1,223)
Cost of goods sold											(116)
Prior Service Cost [Member]
Amount Reclassified from AOCI [Abstract]
Selling, general and administrative expenses											$ (50)

[1] Income from continuing operations includes a gain on sale of an office building of $4,680 and a corresponding tax expense of $1,470 and a benefit of $1,155 due to changes in tax laws.

[2] Income from continuing operations includes the reversal of a valuation allowance on deferred tax assets of $36,287 and the impact on deferred taxes of a statutory rate change of $1,328.