Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Cash Flow Hedges, beginning balance	$ 282	[1]		$ 35	[1]
Cash Flow Hedges, other comprehensive income/(loss) before reclassifications	(750)	[1]		(478)	[1]
Cash Flow Hedges, amounts reclassified from OCI	(27)	[1]		(52)	[1]
Cash Flow Hedges, ending balance	(495)	[1]		(495)	[1]
Pension Items, beginning balance	(11,534)	[1]		(12,062)	[1]
Pension Items, other comprehensive income/(loss) before reclassifications	0	[1]		0	[1]
Pension Items, amounts reclassified from OCI	527	[1]		1,055	[1]
Pension Items, ending balance	(11,007)	[1]		(11,007)	[1]
Foreign Currency Items, beginning balance	(11,386)			7,442
Foreign Currency Items, other comprehensive income/(loss) before reclassifications	(7,375)			(26,203)
Foreign Currency Items, amounts reclassified from OCI	0			0
Foreign Currency Items, ending balance	(18,761)			(18,761)
Accumulated Other Comprehensive Income, beginning balance	(22,638)			(4,585)
Other Comprehensive income (loss) before reclassification Adjustments Net Of Tax	(8,125)			(26,681)
Amounts Reclassified from OCI	500			1,003
Accumulated Other Comprehensive Income, ending balance	(30,263)			(30,263)
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	73,843		65,657	154,642		134,500
Total net of tax	527	[1]		1,055	[1]
Amounts reclassified from accumulated other comprehensive income [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Pension Items, amounts reclassified from OCI	527			1,055
Amortization of pension expense included in selling and administrative expense [Abstract]
Total before income taxes	842			1,685
Tax benefit	(315)			(630)
Total net of tax	527			1,055
Actuarial Gain Loss [Member] | Amounts reclassified from accumulated other comprehensive income [Member]
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	799			1,599
Prior Service Cost [Member] | Amounts reclassified from accumulated other comprehensive income [Member]
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	$ 43			$ 86

[1] Cash Flow Hedges and Pension Items are net of tax.