Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (2,815)	$ (2,586)	$ (5,806)	$ (5,306)
Net sales	306,693	314,941	595,025	615,515
Income before income taxes	45,469	47,826	83,778	88,920
Tax benefit	(12,257)	(13,599)	(21,718)	(25,617)
Total reclassifications in the period	33,212	34,227	62,060	63,303
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications in the period	(1,941)	(3,039)	(3,785)	(5,646)
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 before income taxes	(94)	(330)	(240)	(789)
Tax benefit	43	106	99	239
Income from continuing operations	(51)	(224)	(141)	(550)
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	(149)	(214)	(300)	(429)
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	55	(116)	60	(360)
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 before income taxes	(2,908)	(4,236)	(5,597)	(7,863)
Tax benefit	1,018	1,421	1,953	2,767
Income from continuing operations	(1,890)	(2,815)	(3,644)	(5,096)
Amortization of prior-service credits, net	39	64	82	127
Amortization of actuarial losses	$ (2,947)	$ (4,300)	$ (5,679)	$ (7,990)