Changes in Accumulated Other Comprehensive Income by Component (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 3,241		$ 2,435	$ 7,598		$ 4,803
Net sales	267,394		215,310	530,940		438,104
Income from continuing operations before income taxes	32,413		23,270	52,045		44,661
Tax benefit	(23,218)		(3,783)	(27,417)		(7,584)
Income from continuing operations	9,195		19,487	24,628		37,077
Income from discontinued operations, net of income taxes	200,132		5,344	198,171		9,961
Total reclassifications in the period	209,327		24,831	222,799		47,038
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from discontinued operations, net of income taxes	(4,143)			(4,143)
Total reclassifications in the period	(5,690)			(8,391)
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	31			116
Tax benefit	26			38
Income from continuing operations	57			154
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	(212)			(411)
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	243			527
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	(2,019)			(6,391)
Tax benefit	415			1,989
Income from continuing operations	(1,604)			(4,402)
Amortization of prior-service credits	(14)	[1]		178	[1]
Amortization of actuarial losses	(4,449)	[1]		(8,814)	[1]
Curtailment gain (net)	3,081	[1]		2,882	[1]
Settlement loss	(637)	[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
Income from discontinued operations, net of income taxes	$ (4,143)			$ (4,143)

[1] These accumulated other comprehensive income components are included within the computation of net periodic pension cost. See Note 10.