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Note 4 - Goodwill and Intangible Assets
3 Months Ended
Mar. 31, 2013
Goodwill and Intangible Assets Disclosure [Text Block]
4.     GOODWILL AND INTANGIBLE ASSETS

Goodwill

Our recorded goodwill by reporting segment was as follows at March 31, 2013 and December 31, 2012 (in millions):

   
2013
   
2012
 
Energy and Mining
  $ 77.9     $ 78.1  
North American Water and Wastewater
    101.8       101.9  
International Water and Wastewater
    27.3       28.1  
Commercial and Structural
    65.7       65.6  
Total goodwill
  $ 272.7     $ 273.7  

The following table presents a reconciliation of the beginning and ending balances of the Company’s goodwill at March 31, 2013 (in millions):

   
Energy
 and
Mining
   
North
American
Water and
Wastewater
   
International
Water and
Wastewater
   
Commercial
and Structural
   
Total
 
Beginning balance at January 1, 2013
  $ 78.1     $ 101.9     $ 28.1     $ 65.6     $ 273.7  
Additions to goodwill through acquisitions (1)
                      0.2       0.2  
Foreign currency translation
    (0.2 )     (0.1 )     (0.8 )     (0.1 )     (1.2 )
Goodwill at end of period(2)
  $ 77.9     $ 101.8     $ 27.3     $ 65.7     $ 272.7  

 
(1)
During 2013, the Company recorded an increase of goodwill of $0.2 million related to the Fyfe Asia acquisition.

 
(2)
The Company does not have any accumulated impairment charges.

Intangible Assets

Intangible assets at March 31, 2013 and December 31, 2012 were as follows (in thousands):

   
As of March 31, 2013
   
As of December 31, 2012
 
   
Weighted
Average Useful Lives (Years)
   
Gross
Carrying
Amount
   
Accumulated Amortization
   
Net
Carrying
Amount
   
Gross
Carrying
Amount
   
Accumulated Amortization
   
Net
Carrying
Amount
 
License agreements
    7.0     $ 3,922     $ (2,861 )   $ 1,061     $ 3,925     $ (2,821 )   $ 1,104  
Backlog
          5,191       (5,191 )           5,196       (5,196 )      
Leases
    13.5       2,070       (365 )     1,705       2,067       (331 )     1,736  
Trademarks
    16.9       21,836       (3,680 )     18,156       21,810       (3,417 )     18,393  
Non-competes
          740       (740 )           740       (740 )      
Customer relationships
    14.5       126,111       (21,426 )     104,685       126,301       (19,684 )     106,617  
Patents and acquired technology
    18.1       55,207       (21,025 )     34,182       55,672       (21,244 )     34,428  
            $ 215,077     $ (55,288 )   $ 159,789     $ 215,711     $ (53,433 )   $ 162,278  

Amortization expense was $2.6 million and $2.7 million for the quarters ended March 31, 2013 and 2012, respectively. Estimated amortization expense by year is as follows (in thousands):

 
2013
  $ 10,582    
 
2014
    10,686    
 
2015
    10,686    
 
2016
    10,667    
 
2017
    10,646