The Company has a domestic defined contribution plan that covers all non-union hourly and all salaried employees (Salaried Plan). The Salaried Plan permits both pre-tax and after-tax employee contributions. Participants can contribute, subject to statutory limitations, between 1% and 75% of eligible pre-tax pay and between 1% and 100% of eligible after-tax pay. The Company's employer match is 100% of the first 1% of deferred eligible compensation and up to 50% of the next 6%, based on years of service, of deferred eligible compensation, for a total maximum potential match of 4%. The Company may also make discretionary contributions to the Salaried Plan.

The Company's Portec Rail subsidiary also maintains a defined contribution plan covering substantially all employees of Portec Rail Products (UK) Ltd (UK Plan). Benefits under the UK Plan are provided under no formal written agreement. Under the terms of the defined contribution UK Plan, Portec Rail may make non-elective contributions of between 3% and 10% of each employee's compensation.

The Company's Portec Rail subsidiary maintains a defined contribution plan covering all non-union employees at its Montreal, Quebec, Canada location (Montreal Plan). Under the terms of the Montreal Plan, Portec Rail may contribute 4% of each employee's compensation as a non-elective contribution and may also contribute 30% of the first 6% of each employee's compensation contributed to the Montreal Plan.

Retirement Plans (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2012 Salaried Benefit Plan [Member]	Jun. 30, 2012 United Kingdom Benefit Plan [Member]	Jun. 30, 2012 United Kingdom Benefit Plan [Member]	Jun. 30, 2012 Kelsan Benefit Plan [Member]	Jun. 30, 2012 United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of retirement plans	5
Defined Benefit Plan Number	3
Active Defined Benefit Plan Number	1
Inactive Defined Benefit Plan Number	2
Defined Contribution Plan Number	2
US Defined Benefit Plan		$ 741
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year				231	231
Defined Benefit Plan, Contributions by Employer				110
Employer Contributions To Defined Benefit Plan							$ 421
Description of Postemployment Benefits			The Company has a domestic defined contribution plan that covers all non-union hourly and all salaried employees (Salaried Plan). The Salaried Plan permits both pre-tax and after-tax employee contributions. Participants can contribute, subject to statutory limitations, between 1% and 75% of eligible pre-tax pay and between 1% and 100% of eligible after-tax pay. The Company's employer match is 100% of the first 1% of deferred eligible compensation and up to 50% of the next 6%, based on years of service, of deferred eligible compensation, for a total maximum potential match of 4%. The Company may also make discretionary contributions to the Salaried Plan.		The Company's Portec Rail subsidiary also maintains a defined contribution plan covering substantially all employees of Portec Rail Products (UK) Ltd (UK Plan). Benefits under the UK Plan are provided under no formal written agreement. Under the terms of the defined contribution UK Plan, Portec Rail may make non-elective contributions of between 3% and 10% of each employee's compensation.	The Company's Portec Rail subsidiary maintains a defined contribution plan covering all non-union employees at its Montreal, Quebec, Canada location (Montreal Plan). Under the terms of the Montreal Plan, Portec Rail may contribute 4% of each employee's compensation as a non-elective contribution and may also contribute 30% of the first 6% of each employee's compensation contributed to the Montreal Plan.