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Condensed Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 15,629	$ 18,878
Foreign currency translation adjustments	(11,957)	9,454
Net change in:
Deferred gains (losses) on cash flow hedges, net of taxes of $(170) and $320, respectively	441	(820)
Unrecognized retirement obligations, net of taxes of $(2,313) and $(1,864), respectively	3,827	3,017
Other comprehensive income (loss)	(7,689)	11,651
Comprehensive income	$ 7,940	$ 30,529

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Other comprehensive income (loss), amortization, pension and other postretirement benefit plans, net prior service cost unrecognized in net periodic pension cost, net of tax.

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