Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income, beginning balance	$ 6,002
Other comprehensive (loss) income before reclassifications	282
Amounts reclassified from OCI	(127)
Accumulated Other Comprehensive Income, ending balance	6,157
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	122,929		80,799
Total before income taxes	(117)		843
Tax expense (benefit)	55		(315)
Total net of tax	(62)		528
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income, beginning balance	(99)	[1]
Other comprehensive (loss) income before reclassifications	261	[1]
Amounts reclassified from OCI	(65)	[1]
Accumulated Other Comprehensive Income, ending balance	97	[1]
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income, beginning balance	(6,768)	[1]
Other comprehensive (loss) income before reclassifications	0	[1]
Amounts reclassified from OCI	(62)	[1]
Accumulated Other Comprehensive Income, ending balance	(6,830)	[1]
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income, beginning balance	12,869
Other comprehensive (loss) income before reclassifications	21
Amounts reclassified from OCI	0
Accumulated Other Comprehensive Income, ending balance	12,890
Prior Service Cost [Member]
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	43		43
Actuarial Gain Loss [Member]
Amortization of pension expense included in selling and administrative expense [Abstract]
Selling and administrative expense	$ (160)		$ 800

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