Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 17,658	$ 30,977	$ 34,938
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	8,135	11,865	(13,070)
Pension and postretirement settlements and curtailments	46	118,350	327
Pension and postretirement plan remeasurement	20,500	(48,233)	(28,375)
Pension and postretirement plan amendments	7,361
Amortization of pension liability adjustments:
Transition obligation	70	79	83
Prior service (credit)/cost	(3,905)	(3,631)	(3,629)
Net actuarial loss	6,512	7,438	8,694
Payments related to derivatives included in earnings	1,900	1,700	1,900
Derivative valuation adjustment, net of payments	1,216	(2,167)	(5,699)
Income taxes related to items of other comprehensive income:
Pension and postretirement settlements and curtailments	(18)	(39,146)	(72)
Pension and postretirement plan remeasurement	(6,757)	14,711	6,382
Pension and postretirement plan amendments	(2,871)
Amortization of pension liability adjustment	(451)	(1,360)	(1,159)
Payments related to derivatives included in earnings	(741)	(663)	(741)
Derivative valuation adjustment	(474)	845	2,222
Comprehensive income	48,181	90,765	1,801
Comprehensive income attributable to the noncontrolling interest
Comprehensive income attributable to the Company	$ 48,181	$ 90,765	$ 1,801