Changes in Accumulated Other Comprehensive Income by Component (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 3,319	$ 4,357
Net sales	312,099	263,545
Income from continuing operations before income taxes	31,571	19,632
Tax benefit	(8,819)	(4,199)
Income from continuing operations	22,752	15,433
Loss from discontinued operations, net of income taxes	0	(1,961)
Total reclassifications in the period	22,752	13,472
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications in the period	(1,668)	(2,700)
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	(195)	85
Tax benefit	76	13
Income from continuing operations	(119)	98
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	(217)	(199)
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	22	284
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	(2,361)	(4,372)
Tax benefit	812	1,574
Income from continuing operations	(1,549)	(2,798)
Amortization of prior-service credits, net	40	192
Amortization of actuarial losses	(2,178)	(4,365)
Curtailment loss (net)	$ (223)	$ (199)