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Intangible Assets, Net
 3 Months Ended
Mar. 31, 2012
Intangible Assets, Net [Abstract]  
Intangible Assets, Net
3. Intangible Assets, Net

Intangible assets, net are summarized as follows:

 

                 
     March 31,
2012		     December 31,
2011		  
($ in thousands)             

Definite-lived intangible assets:

                 

Investment contracts

    $ 197,143      $ 269,489   

Accumulated amortization

      (178,418 )      (249,809 ) 
    

 

 

    

 

 

  

Definite-lived intangible assets, net

      18,725        19,680   

Indefinite-lived intangible assets

      32,416        32,416   
    

 

 

    

 

 

  

Total intangible assets, net

    $ 51,141      $ 52,096   
    

 

 

    

 

 

  

Activity in intangible assets, net is as follows:

 

                 
     Three Months Ended March 31,  
($ in thousands)    2012     2011  

Intangible assets, net

                 

Balance, beginning of period

    $ 52,096      $ 52,977   

Purchases

      —          141   

Amortization

      (955 )      (1,042 ) 
    

 

 

    

 

 

  

Balance, end of period

    $ 51,141      $ 52,076