Goshen Facility Closure - Narrative (Details) (Facility Closing Goshen [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013 employees	Dec. 31, 2012	Dec. 31, 2012 employees
Restructuring Cost and Reserve [Line Items]
Severance Costs		$ 1.2
Payments for Postemployment Benefits	0.2
Restructuring and Related Cost, Expected Number of Positions Eliminated	350		70
Expected Other Restructuring Costs	1.6
Other Restructuring Costs	0.3
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 3.8