Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Dec. 31, 2013 Accumulated Defined Benefit Plans Adjustment [Member]	Mar. 31, 2014 Reclassification out of Accumulated Other Comprehensive Income [Member]	Mar. 31, 2014 Pension Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Dec. 31, 2013 Pension Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Mar. 31, 2014 Pension Plan [Member] Reclassification out of Accumulated Other Comprehensive Income [Member]	Mar. 31, 2014 Post Retirement Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Dec. 31, 2013 Post Retirement Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Mar. 31, 2014 Post Retirement Plan [Member] Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss), beginning balance	$ (18,712)		$ (18,379)	$ (18,712)		$ (20,433)	$ (20,429)		$ 2,054	$ 1,717
Amounts reclassified from accumulated other comprehensive income (loss)	(333)	(331)			333			(4)			337
Accumulated other comprehensive income (loss), ending balance	(18,379)		(18,379)	(18,712)		(20,433)	(20,429)		2,054	1,717
Amortization of Pension and Postretirement Plan items
Prior Service Costs					2			11			(9)
Actuarial (losses)					127			50			77
Foreign currency translation related to pension and postretirement plans					293			24			269
Total before tax					422			85			337
Tax expense	(904)	(1,409)			(89)			(89)			0
Total reclassified for the period	$ (3,573)	$ (15,947)			$ 333			$ (4)			$ 337