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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2012
Commitments and Contingencies [Abstract]  
Future minimum annual lease commitment under operating leases

Future minimum annual lease commitments under operating leases that have initial or remaining noncancelable lease terms in excess of one year as of December 31, 2012 are as follows (in thousands):

 

         

2013

  $ 2,237  

2014

    2,014  

2015

    1,937  

2016

    1,994  

2017

    2,041  

2018 and thereafter

    2,096  
   

 

 

 
   
    $ 12,319