Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill and Other Intangible Assets [Abstract]

Summary of Goodwill and Other Intangible Assets

	Goodwill		Accumulated Impairments			Goodwill, Net
Balance at January 1, 2010	$	18.1	$	(9.5	)	$	8.6
No activity in 2010		—		—			—
Balance at December 31, 2010		18.1		(9.5	)		8.6
Impairments in 2011		—		(0.4	)		(0.4	)
Balance at December 31, 2011		18.1		(9.9	)		8.2
Impairment in 2012		—		(1.9	)		(1.9	)
Balance at December 31, 2012	$	18.1	$	(11.8	)	$	6.3

	Cost				Accumulated Amortization
	2012		2011		2012		2011
Amortizable intangible assets: (1)
Customer relationships	$	1.4	$	1.4	$	0.6	$	0.5

(1) Amortizable intangible assets are included in “Other Assets”.