Facility Closures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2012 Facility Closing Goshen [Member] employees	Dec. 31, 2012 Facility Closing Goshen [Member] employees	Dec. 31, 2012 Facility Closing Goshen [Member] Cost of Sales [Member]	Dec. 31, 2012 Facility Closing Goshen [Member] Selling, General and Administrative Expenses [Member]	Dec. 31, 2011 Facility Closing Tekonsha [Member]	Sep. 30, 2012 Facility Closing Tekonsha [Member]	Dec. 31, 2011 Facility Closing Tekonsha [Member] employees	Dec. 31, 2011 Facility Closing Tekonsha [Member] Cost of Sales [Member]	Dec. 31, 2011 Facility Closing Tekonsha [Member] Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated		74					40
Severance Costs	$ 1.2		$ 0.8	$ 0.4	$ 0.5			$ 0.4	$ 0.1
Future Number of Positions Eliminated	375	375
Expected Other Restructuring Costs	1.6	1.6
Accelerated Depreciation	$ 0.2				$ 0.1	$ 0.4