Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill. A roll-forward of goodwill is as follows (see Note 5 for additional information about the Company's business acquisitions):

Balance as of December 31, 2009	$	—
Goodwill arising from Nichols acquisition	3.1
Balance as of December 31, 2010	$	3.1
Goodwill arising from Alexco acquisition	34.1
Balance as of December 31, 2011	$	37.2

Identifiable intangible assets

December 31, 2011:

	Weighted average Estimated useful life	Original cost		Accumulated amortization			Net book value
Customer relationships	25	$	38.5	$	(1.7	)	$	36.8
Backlog	2	0.8		(0.7		)	0.1
Trademark and trade name	3	0.4		(0.1		)	0.3
Total	24	$	39.7	$	(2.5	)	$	37.2

December 31, 2010:

	Weighted average Estimated useful life	Original cost		Accumulated amortization			Net book value
Customer relationships	20	$	3.8	$	(0.1	)	$	3.7
Backlog	3	0.5		(0.2		)	0.3
Total	18	$	4.3	$	(0.3	)	$	4.0

Expected amortization of intangible assets for the next five years

The expected amortization of intangible assets for the next five calendar years is as follows:

2012	$	1.8
2013	1.7
2014	1.6
2015	1.6
2016	1.6
Thereafter	28.9
Total	$	37.2