Derivative Financial Instruments (Interest Rate Derivatives) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Derivative [Line Items]
Derivative, Notional Amount	$ 6.0	$ 10.5	$ 12.2
HBB
Derivative [Line Items]
Derivative, Notional Amount	$ 20.0	$ 25.0	$ 25.0
Average Fixed Rate	1.40%	4.00%	4.10%
Remaining Term	delayed contracts extending to January 2020