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Goodwill and Intangible Assets
9 Months Ended
Sep. 30, 2011
Goodwill and Intangible Assets Disclosure [Abstract] 
Goodwill and Intangible Assets
Goodwill and Intangible Assets
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, 2010
$
3.1

Goodwill arising from Alexco acquisition
34.1

Balance as of September 30, 2011
$
37.2


All of the Company’s goodwill is included in the Fabricated Products segment.
Identifiable intangible assets at September 30, 2011 and December 31, 2010 are comprised of the following:
September 30, 2011:
 
Weighted-
average
estimated useful
life
 
Original cost
 
Accumulated
amortization
 
Net book
value
Customer relationships
25

 
$
38.5

 
$
(1.3
)
 
$
37.2

Backlog
2

 
0.8

 
(0.5
)
 
0.3

Trademark and trade name
3

 
0.4

 
(0.1
)
 
0.3

Total
24

 
$
39.7

 
$
(1.9
)
 
$
37.8

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
2

 
0.5

 
(0.2
)
 
0.3

Total
18

 
$
4.3

 
$
(0.3
)
 
$
4.0


Amortization expense relating to definite-lived intangible assets is recorded in the Fabricated Products segment. Such expense was $0.5 and $1.6 for the quarter and nine months ended September 30, 2011. The expected amortization of intangible assets for the next five calendar years is as follows:
2012
$
2.0

2013
1.7

2014
1.6

2015
1.6

2016
1.6

Total
$
8.5