Union Contracts (Details)	Mar. 31, 2014 employees
Mansfield OH Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	280
Middletown OH Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	1,650
Walbridge Tube [Member]
Concentration Risk [Line Items]
Entity Number of Employees	100
Ashland Works [Member]
Concentration Risk [Line Items]
Entity Number of Employees	820