Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Changes in accumulated other comprehensive income [Roll Forward]
Foreign currency translation adjustments, beginning balance	$ 4,663
Foreign currency translation adjustments, other comprehensive income before reclassifications	(812)
Foreign currency translation adjustments, amounts reclassified from accumulated other comprehensive income	0
Foreign currency translation adjustments, current period other comprehensive income, net	(812)		1,069
Foreign currency translation adjustments, ending balance	3,851
Unrecognized pension and postretirement benefit costs (credit), beginning balance	(784)
Unrecognized pension and postretirement benefit costs (credit), other comprehensive income before reclassifications	(12)
Unrecognized pension and postretirement benefit costs (credit), amounts reclassified from accumulated other comprehensive income	(187)
Unrecognized pension and postretirement benefit costs (credit), current period other comprehensive income, net	(199)
Unrecognized pension and postretirement benefit costs (credit), ending balance	(983)
Accumulated other comprehensive income, beginning period	3,879
Other comprehensive income before reclassifications	(824)
Amounts reclassified from accumulated other comprehensive income	(187)
Current period other comprehensive income, net	(1,011)
Accumulated other comprehensive income, ending period	2,868
Amortization of pension and postretirement benefit plans [Abstract]
Prior service benefit	(1,080)	[1]	(1,196)
Unrecognized loss	785	[1]	713
Amount reclassified from accumulated other comprehensive income, total before income tax	(295)
Amount reclassified from accumulated other comprehensive income, income tax benefit	108		186
Total reclassifications for the period	$ (187)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension and postretirement benefit costs, which are included in selling, general and administrative expenses in our consolidated statements of operations (see Note 11 for additional details).