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Accounts Receivable (Tables)
 12 Months Ended
Dec. 31, 2012
Accounts Receivable [Abstract]  
Summary Of Accounts Receivable And Related Allowance For Doubtful Accounts
  December 31,
(in thousands) 2012 2011
Accounts receivable $ 9,096   $ 6,464  
Unbilled accounts receivable   668     618  
Allowance for doubtful accounts   (383 )   (236 )
  $ 9,381   $ 6,846