Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Intangible Assets (Textual) [Abstract]
Amortization of other intangible assets acquired	$ 0.5	$ 0.6	$ 1.1	$ 1.0
Amortization of deferred financing costs	0.2	1.0	0.5	2.0
Period reduction due to acceleration of carrying value of assets	$ 0.1		$ 1.8
Maximum [Member]
Other intangible assets acquired, useful life (in years)			20 years
Minimum [Member]
Other intangible assets acquired, useful life (in years)			2 years