Changes in Accumulated Other Comprehensive Income by Component (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 2,401		$ 3,243	$ 10,000		$ 8,046
Net sales	269,491		232,476	800,430		670,580
Income from continuing operations before income taxes	25,389		18,370	77,434		63,031
Tax benefit	(4,008)		(2,342)	(31,426)		(9,926)
Income from continuing operations	21,381		16,028	46,008		53,105
(Loss) income from discontinued operations, net of income taxes	(476)		2,453	197,696		12,414
Total reclassifications in the period	20,905		18,481	243,704		65,519
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			(4,143)
Total reclassifications in the period	(2,776)			(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	(88)			28
Tax benefit	53			91
Income from continuing operations	(35)			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	(220)			(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	132			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	(4,241)			(10,632)
Tax benefit	1,500			3,489
Income from continuing operations	(2,741)			(7,143)
Amortization of prior-service credits, net	38	[1]		216	[1]
Amortization of actuarial losses	(4,279)	[1]		(13,093)	[1]
Curtailment gain (net)	0	[1]		2,882	[1]
Settlement loss	0	[1]		(637)	[1]
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
(Loss) income from discontinued operations, net of income taxes	$ 0			$ (4,143)

[1] These accumulated other comprehensive income components are included within the computation of net periodic pension cost. See Note 9.