Changes in Accumulated Other Comprehensive Income by Component (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (2,435)	$ (2,401)	$ (8,558)	$ (10,000)
Net sales	317,659	269,491	951,832	800,430
Income from continuing operations before income taxes	47,709	25,389	121,065	77,434
Tax benefit	(13,407)	(4,008)	(33,782)	(31,426)
Income from continuing operations	34,302	21,381	87,283	46,008
(Loss) income from discontinued operations, net of income taxes	(425)	(476)	(425)	197,696
Total reclassifications in the period	33,877	20,905	86,858	243,704
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) income from discontinued operations, net of income taxes	0	0	0	(4,143)
Total reclassifications in the period	(2,137)	(2,776)	(6,181)	(11,167)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains and Losses on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	(463)	(88)	(922)	28
Tax benefit	136	53	304	91
Income from continuing operations	(327)	(35)	(618)	119
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains and Losses on Cash Flow Hedges | Interest Rate Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(224)	(220)	(663)	(631)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains and Losses on Cash Flow Hedges | Foreign Exchange Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net sales	(239)	132	(259)	659
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension and Other Postretirement Benefit Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes	(2,624)	(4,241)	(8,044)	(10,632)
Tax benefit	814	1,500	2,481	3,489
Income from continuing operations	(1,810)	(2,741)	(5,563)	(7,143)
Amortization of prior-service credits (costs), net	66	38	167	216
Amortization of actuarial losses	(2,409)	(4,279)	(7,125)	(13,093)
Curtailment gain	0	0	(223)	2,882
Settlement loss	(281)	0	(863)	(637)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	0	0	0	0
(Loss) income from discontinued operations, net of income taxes	$ 0	$ 0	$ 0	$ (4,143)