Components of Accumulated Other Comprehensive Loss Reclassifications (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	$ 66,794		$ 124,698
Income from continuing operations before income taxes and equity loss	18,669		14,448
Tax benefit	4,495		4,965
Net income	12,541		9,072
Amount Reclassified from Accumulated Other Comprehensive Loss | Cumulative Unrecognized Actuarial Losses on Pension Obligations
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes and equity loss	4,459	[1]	5,540	[1]
Tax benefit	(359)	[1]	(558)	[1]
Net income	4,100	[1]	4,982	[1]
Amount Reclassified from Accumulated Other Comprehensive Loss | Actuarial losses
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	2,839	[1],[2]	3,147	[1],[2]
Cost of services and products sold	1,552	[1],[2]	2,266	[1],[2]
Amount Reclassified from Accumulated Other Comprehensive Loss | Prior service costs
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	23	[1],[2]	64	[1],[2]
Cost of services and products sold	45	[1],[2]	63	[1],[2]
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Cost of services and products sold	2	[1]	6	[1]
Tax benefit	(1)	[1]	0	[1]
Net income	$ 1	[1]	$ 6	[1]

[1] (a) Amounts in parentheses indicate credits to profit/loss

[2] (b) These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See Note 8, Employee Benefit Plans, for additional details.