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Leases (Tables)
12 Months Ended
Dec. 31, 2012
Leases [Abstract]  
Future minimum lease payments under operating leases
 
($ in thousands)
     
2013
  $ 333  
2014
    263  
2015
    95  
2016
    100  
2017
    86  
Thereafter
    77  
         
Total minimum lease payments
  $ 954