Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Mar. 31, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Reclassification out of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Pension Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Pension Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Pension Plan [Member] Reclassification out of Accumulated Other Comprehensive Income [Member]	Jun. 30, 2014 Post Retirement Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Post Retirement Plan [Member] Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 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)	$ (18,712)		$ (20,433)	$ (20,429)		$ 2,054	$ 1,717
Amounts reclassified from accumulated other comprehensive income (loss)	(140)	(417)	(473)	(748)	140		473		121	117		19	356
Accumulated other comprehensive income (loss), ending balance	(18,239)		(18,239)		(18,239)	(18,379)	(18,239)		(20,312)	(20,312)		2,073	2,073
Amortization of Pension and Postretirement Plan items
Prior Service Costs								4			22			(18)
Actuarial (losses)								258			101			157
Foreign currency translation related to pension and postretirement plans								289			261			28
Total before tax								551			384			167
Tax expense	1,461	(1,464)	557	(2,873)				(78)			(78)			0
Total reclassified for the period	$ 5,295	$ (5,362)	$ 1,722	$ (21,309)		$ 333	$ 473	$ 473			$ 306			$ 167