Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Component of Other Income, Nonoperating [Line Items]
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	$ (3,585)
Accumulated other comprehensive loss, net of tax, Current period change	(883)	(3,057)
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	(4,468)
Foreign Currency Translation Adjustment [Member]
Component of Other Income, Nonoperating [Line Items]
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	(2,201)
Accumulated other comprehensive loss, net of tax, Current period change	(904)
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	(3,105)
Minimum Pension Liability Adjustment [Member]
Component of Other Income, Nonoperating [Line Items]
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	45
Accumulated other comprehensive loss, net of tax, Current period change	2
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	47
Unamortized Post-Retirement Health Care Costs [Member]
Component of Other Income, Nonoperating [Line Items]
Accumulated other comprehensive loss, net of tax, Balance at December 31, 2013	(1,429)
Accumulated other comprehensive loss, net of tax, Current period change	19
Accumulated other comprehensive loss, net of tax, Balance at March 31, 2014	$ (1,410)